Mark Levinson №523 User Manual

TABLE OF CONTENTS / ABOUT THIS DOCUMENT

TABLE OF CONTENTS

About This Document 1

Special Design Features 2

Installation Considerations 3

Unpacking, Placement and Ventilation, Power Requirements, Operating States

Getting Started 5

Front-Panel Overview: Rear Panel, Remote Control Overview

Quick Setup and Listen 11

Remote Control, Initial Connections

Setup Menu 14

Setup Menu Navigation, Input Setup, Volume Control, Power Management and Display, Advanced, Output

SSP Setup 19

Troubleshooting 21

Specifications 23

ENGLISH

ABOUT THIS DOCUMENT

This manual will enable you to configure and finely tailor the
behavior and performance of the preamp to fit your preferences
and the particulars of your equipment and listening room. It is
strongly recommended that you follow this manual in the order in
which it is written so that you understand safety considerations
before configuring this sophisticated preamplifier.

N0 526 / N0 523 DUAL-MONAURAL PREAMPLIFIER / OWNER’S MANUAL

1

SPECIAL DESIGN FEATURES

SPECIAL DESIGN FEATURES

Thank you for purchasing a N0526 or N0523 dual-monaural
preamplifier. Combining Mark Levinson’s unsurpassed analog
performance with flexible system configuration and advanced
digital and phono capabilities, these preamplifiers push the
reproduction of source material to new levels of realism.

Architecture

The foundation of these preamplifiers is their proprietary Mark
Levinson Pure Path discrete, direct-coupled, fully balanced,
dual-monaural signal path with discrete, balanced R-2R ladder
volume controls. They feature individual signal switching relays
for each of their stereo inputs: two balanced (XLR) and three
single-ended (RCA), plus phono; and six additional digital
inputs on the N0526. Volume controls use discrete 15-bit R-2R
ladders and low-noise analog switches for the widest possible
bandwidth and maximum signal integrity. System integration
and expansion are possible using the outputs, which can
operate full-range or with a switchable fourth-order, 80Hz filter
allowing for seamless integration into systems with powered
subwoofers.

Audio Chassis

Building upon this superb analog platform, the N0526 adds
equally outstanding digital audio capability. The Mark Levinson
Precision Link D/A converter with nine individual power
supplies, proprietary jitter elimination circuitry and fully
balanced, discrete I/V circuitry forms the heart of the digital
audio processing stage. Six digital audio inputs are provided
including one AES/EBU, two coaxial and two optical plus a USB
audio processor capable of asynchronous data transfer of high­resolution DSD and PCM at up to 192kHz, 32-bit resolution. For
low-resolution audio formats, proprietary HARMAN Clari-Fi®
music restoration technology reconstructs information and
bandwidth lost in compressed file formats. System integration
and communication ports include Ethernet, USB, RS-232, IR
input, and 12V trigger input and output. A system IR remote
control is included.

Features

• Mark Levinson Pure Path proprietary discrete, direct coupled,
fully balanced, dual-monaural signal path

• Discrete, balanced R-2R ladder volume controls

• Digital inputs: USB asynchronous, AES/EBU balanced, two
Toslink optical, two Coaxial (N0526 only)

• Analog inputs: two balanced, three unbalanced, phono with
grounding pin

• Analog outputs: XLR balanced pair, RCA unbalanced pair, 1/4­inch (6.3mm) headphone

• Supports high-resolution formats including 32-bit, 192kHz
PCM and double-speed DSD (N0526 only)

• Mark Levinson Precision Link DAC featuring the renowned
ESS Sabre 32-bit processor (N0526 only)

• Pure Phono stage with selectable gain, infrasonic filter,
resistive and capacitive-loading settings

• Selectable fourth-order, 80 Hz high-pass filter allows
seamless integration of subwoofer

• SSP Mode for pass-through connection to a multichannel
surround processor

• Mark Levinson Main Drive circuit for headphone playback:
front-panel jack with integral Class A amplifier

• Designed and handcrafted in the USA

Construction

The chassis of the preamplifiers utilizes modular architecture
to isolate critical low-level analog and digital circuitry from the
power supplies. The 6000-series extruded aluminum and steel
chassis features internal heatsinks and Mark Levinson’s iconic
appearance of black with silver trim.

2

N0 526 / N0 523 DUAL-MONAURAL PREAMPLIFIER / OWNER’S MANUAL

INSTALLATION CONSIDERATIONS

INSTALLATION CONSIDERATIONS

UNPACKING

When unpacking your preamplifier:

• Save all packing materials in case you need to ship your
preamp in the future.

• Inspect your preamp for signs of damage during shipment. If
you discover damage, contact your authorized Mark Levinson
dealer for assistance in making appropriate claims.

• Please register your preamplifier within 15 days of purchase
at marklevinson.com.

• Retain your original, dated sales receipt as proof of warranty
coverage.

• Remove the accessory box from the shipping carton. Make
sure that all of the items listed below are included. If any are
missing, contact your authorized Mark Levinson dealer.

o IEC power cord (terminated according to the region to

which the unit is shipped)
o Remote control with preinstalled batteries
o Phillips screwdriver (for replacing remote batteries)
o Pair white gloves (for use during unpacking and initial

setup)
o Documentation

PLACEMENT AND VENTILATION

• Install the preamplifier on a shelf with several inches of
clearance above it to ensure proper ventilation. Do NOT
install the preamplifier inside of an enclosed cabinet or rack.

• Ensure that you install the preamplifier on a solid, flat and
level surface.

• Install the preamplifier as close as possible to associated
audio components to keep interconnecting cables as short as
possible.

• Select a dry, well-ventilated location that is out of direct
sunlight.

• DO NOT expose the preamp to high temperatures, humidity,
steam, smoke, dampness, or excessive dust.

• DO NOT block chassis ventilation holes.

POWER REQUIREMENTS

The preamplifier is configured at the factory for 100, 115, or
230 VAC power operation at 50Hz or 60Hz. Before operating,
ensure that the power label on the rear panel near the AC input
connector indicates the correct operating voltage. A detachable
IEC power cable intended for use in the region where the unit is
sold is included.

Connection to an AC voltage other than that for which the
unit is intended can create a safety and fire hazard and may
damage the unit. If you have any questions about the voltage
requirements for your preamplifier or about the line voltage in
your area, contact your authorized Mark Levinson dealer before
plugging the unit into an AC power outlet.

WARNING! MAKE SURE all components in the audio

system are properly grounded. Do NOT defeat the
safety purpose of polarized or grounding-type plugs
with “ground-lifter” or “cheater” adapters. Doing so
may cause dangerous voltage to build up between
components, which may result in personal injuries and/
or product damage.

You should unplug the preamplifier from the AC wall outlet during
lightning storms and extended periods of non-use.

CAUTION: BEFORE moving the unit, make sure it is powered off
by removing the power cord from the AC power outlet and the
unit’s rear panel.

ENGLISH

N0 526 / N0 523 DUAL-MONAURAL PREAMPLIFIER / OWNER’S MANUAL

3

INSTALLATION CONSIDERATIONS

OPERATING STATES

The preamplifier has three operating states:
Off: The AC mains power is disconnected by using the rear-

panel Power switch or by removing the power cord from the
rear panel.

Standby: The Standby mode has three settings that can be
selected via the Setup menu: Green, Power Save, and Normal.

Green:

Power Save:

Normal:

On: The entire unit is powered up and all configured outputs
are active.

The preamplifier has an Auto Off feature that automatically
places it into the Standby mode after 20 minutes of no user
control input or audio signal passing through the unit. The
factory-default setting for the Auto Off feature is on (engaged).
You can turn the Auto Off feature off (disengaged) in the Setup
menu.

This mode removes power from almost all of the
circuits, allowing the unit to be activated only via an IR control
signal, a 5V – 12V trigger or a press of the Standby button.
This mode provides maximum power conservation and is the
factory-default Standby mode. In Green standby, the LED is
dimmed.

This mode removes power from the audio
circuits, but keeps the control circuitry powered and
ready to receive commands from either the front panel
controls, Ethernet, RS-232 or the remote control.
This mode provides moderate power conservation.
In Power Save standby, the LED is dimmed.

This mode shuts off the display and mutes its audio
outputs, but keeps all of its control and audio circuits powered.
This mode provides the least amount of power conservation
but allows the audio circuits to remain warmed up to deliver
optimal performance at all times. Power consumption:
67-72W.

4

N0 526 / N0 523 DUAL-MONAURAL PREAMPLIFIER / OWNER’S MANUAL

GETTING STARTED

GETTING STARTED

FRONTPANEL OVERVIEW:

Input
Knob

headphones

Headphone

Output

Connector

N0 526 AND N0 523

IR

Receiver

polarity

Setup Button

Polarity Button Enter

setup

enter

Button

Front-panel controls/indicators

Input knob:

Rotate this knob to select the desired input to send
to the outputs. The name and volume level of the selected input
are indicated on the display. (Note: the Input knob will bypass
any input for which the Input Name Setup menu parameter has
been set to “Unused.”)

IR receiver:

the IR receiver receives commands from the
included remote control when the unit is not being controlled
via its rear-panel IR Input connector (see Rear-Panel Overview
for more information). Infrared communication requires line­of-sight between the remote and this “target” on the unit’s front
panel.

Volume

Knob

volumeinput

Intensity

Button

balance mute

Balance

Button

Mute Button Display

Standby

Button

this ¼-inch (6.3mm) TRS phone

display intensity

Headphone output connector:

plug connector provides a stereo signal that can directly drive
most headphones. When the unit detects that headphones have
been connected, the Balanced and Single-Ended outputs are
automatically muted, and the Volume knob switches to control
of the Headphone output level. When the unit detects the
headphones have been disconnected, the Balanced and Single­Ended outputs are automatically unmuted, and the Volume
knob returns to control of their level.

The balanced and single-ended outputs can be configured in
the Setup menu as Fixed (for use with recording components
or a second audio zone). When outputs are configured as Fixed,
they are not affected by any of the front-panel controls.

ENGLISH

N0 526 / N0 523 DUAL-MONAURAL PREAMPLIFIER / OWNER’S MANUAL

5

GETTING STARTED

Polarity button:

pressing this button inverts the absolute
polarity of the signal. The associated LED illuminates when the
signal’s polarity is inverted.

Setup button:

press this button to display the Setup menu, which
you can use to customize the preamp to suit your other system
components, individual preferences and listening space. The
Setup LED lights when the Setup menu is active.

Enter button:

press this button to select or deselect a menu
item when the Setup menu is displayed. When playing from a
digital source, pressing the Enter button displays the sample
rate, unless the PLL Lock is set to Wide.

Display Intensity button:

Press this button to change the
intensity of the front-panel display. Multiple presses of the
Display Intensity button cycle through the available brightness
levels: High, Medium, Low, and Off.

Balance button:

press this button to enter adjustment of the
left-to-right channel output balance (disabled if outputs are set
to Fixed in the Setup menu). The Balance LED lights when the
balance function is active.

NOTE: the Balance LED remains lit when the left-to­right balance of the Main outputs is offset. Headphone
Balance can be adjusted independently of the Balanced
or Single-Ended outputs.

Mute button:

press this button to mute and unmute the level of
the outputs by the amount determined in the Setup menu. The
LED lights when the mute function is active.

Volume knob:

turn this knob to adjust the volume level of the
outputs. The minimum volume level is OFF; the maximum
volume level is determined in the Setup menu. Whenever you
select an input, the unit applies the volume offset selected for it
in the Setup menu to the output volume level.

Standby button:

press this button to put the unit into and out of
the selected Standby mode. The LED illuminates when the unit
is On. When the unit is in Standby mode, it flashes slowly, with
brightness level to indicate Standby mode.

6

N0 526 / N0 523 DUAL-MONAURAL PREAMPLIFIER / OWNER’S MANUAL

N0 526 AND N0 523 REAR PANEL OVERVIEW

GETTING STARTED

main outputs

Designed and assembled in U.S.A.

Harman International I ndustries, Inc.

PREAMPLIFIER N

S/N

Right Channel
Balanced output
connector

Right Channel
Single-ended
output connector

Right Channel

Balanced Analog

Input Connectors

analog audio inputs

1 2

O

526

input connectors

Right Channel

Single-ended Analog

Input Connectors

3 4 5

phono inputs

ground tfelthgir

Phono

Micro USB

connector

USB Type-A

connector

Ethernet

Port

IR Input

Connector

Left Channel

Single-ended Analog

Input Connectors

RS-232

Port

IR

out

RS-232

Balanced

AES/EBU

Digital Input

Connector

trigger

in

out

1

Trigger Output
Connectors
(2, 1)

Left Channel

Balanced Analog

Input Connectors

analog audio inputs

345

2 3 4 5 6

12

digital audio inputs

Coaxial

Digital Input

Connectors

Trigger Input
Connector

Optical

Digital Input

Connectors

0

526 Only

N

Left Channel
Single-ended
output connector

Left Channel
Balanced output
connector

main outputs

~ ac mains

120W

Power
Switch

USB Digital Audio
Input Connector

Fuse Compartment
(see rear-panel
labeling for value)

ENGLISH

AC Mains
Connector

N0 526 / N0 523 DUAL-MONAURAL PREAMPLIFIER / OWNER’S MANUAL

7

GETTING STARTED

Output Connectors

Balanced output connectors:

these XLR 3-pin connectors
provide a line-level left-channel and right-channel signal that
can be used to send the selected input to power amplifier
inputs, a powered subwoofer, or to recording components.
Mark Levinson recommends using the Balanced outputs as the
primary output if your amplifiers offer balanced inputs.

Single-ended output connectors:

these RCA connectors
provide a line-level left-channel and right-channel signal that
can be used to send the selected input to amplifier inputs, a
powered subwoofer, to a second listening zone, or to recording
components.

The Balanced and Single-ended outputs can be configured
in the Setup menu as Fixed (for use with recording
components or a second audio zone). When outputs are
configured as Fixed, they are not affected by any of the
front-panel controls.

By default the Balanced and Single-ended outputs
are confirmed as as Variable. When so configured, the
Balanced and Single-Ended outputs will follow the settings
of the Volume, Balance and Mute controls. The Headphone
output is always variable.

Balanced

Input Connector

(female XLR)

Pin

Pin

3

2

Pin

1

Single-ended input connectors (3, 4, 5):

Balanced

Output Connector

(male XLR)

Pin

Pin

1

Pin

3

2

these connectors accept
left-channel and right-channel single-ended (unbalanced)
input signals from source components without balanced output
connectors. Mark Levinson recommends using balanced
connections whenever possible.

Phono input connectors:

these connectors accept left-channel
and right-channel input signals from turntables with moving­magnet or moving-coil cartridges that do not have a built-in
preamplifier. Connect the turntable output cable’s grounding
terminal to the preamplifier’s ground pin by loosening the
threaded collar, inserting the terminal, and tightening the collar
using your fingers only. Do not tighten the ground pin collar with
tools.

Additionally, if you would like to include a powered
subwoofer in your system, you can restrict the low
frequencies sent to your main speakers by engaging the
unit’s 24dB-per-octave Butterworth 4th-order 80Hz high­pass filter, which can be applied to either the Balanced or
Single-Ended outputs.

For further information on configuring these parameters,
see the Setup Menu section of this manual.

Input Connectors

Balanced analog input connectors (1, 2):

these connectors
accept left-channel and right-channel balanced input signals
from source components with balanced (male XLR) output
connectors.

Balanced connector pin assignments:

• Pin 1: Signal ground

• Pin 2: Signal + (non-inverting) “hot”

• Pin 3: Signal – (inverting) “cold”

N0526 only:

Digital input connectors: the N

0

526 has six digital audio

input connectors:

• One AES/EBU Balanced XLR, numbered 1
o Mark Levinson recommends using the

Balanced connection whenever possible.

• Two Coaxial S/PDIF RCA, numbered 2 and 3

• Two Optical S/PDIF TOSLINK, numbered 4 and 5

• One Asynchronous USB Type B, numbered 6
o The USB connection is used for streaming

audio from your computer.

Control Connectors

Micro USB connector:

this connection enables the unit to be
connected to a computer for internal webpage discovery. When
the unit is connected to power and network, the preamplifier
will mount to the PC as a mass-storage device containing a
hyperlink to its internal web page for configuration and status
monitoring.

8

N0 526 / N0 523 DUAL-MONAURAL PREAMPLIFIER / OWNER’S MANUAL

GETTING STARTED

USB Type-A connector:

the connector is for attaching a USB
flash drive containing unit software update, or for importing
and exporting setup configurations. Further information on
software updates is available from the
section of this manual

Ethernet connector:

.

This connector accepts a Cat5 or higher

Setup Menu: Advanced

cable for connection to a home network. For information on
how to configure and use the Ethernet port, see

Advanced

IR input connector:

section of this manual

this 1/8-inch (3.5mm) connector accepts IR

.

Setup Menu:

(infrared) control signals from other equipment. (does not work
with extenders)

NOTE: that the IR input connector does not provide
power for IR extender modules.

RS-232 connector:

this RJ-11 connector provides serial control

through a standard RS-232 connection.

Trigger output connectors:

these 1/8-inch (3.5mm) TS phone plug
connectors can be used to activate other components in the audio
system and listening room, such as amplifiers, lights, and window
shades. A 12V 100mA DC signal is output whenever the unit is on.
The trigger can also be pulsed and delayed. (See illustration)

REMOTE CONTROL OVERVIEW

Setup

Button

Input

Buttons

Polarity

Button

Display

Button

N0 526 Only

Standby
Button

Enter
Button

Volume
Buttons

Balance
Button

Mute
Button

USB
Control
Buttons

Clari-Fi
Button

ENGLISH

Trigger phone plug connector pin assignments:

• Tip: +

• Sleeve: –

Trigger input connector:

this 1/8-inch (3.5mm) TS phone plug
connector can be connected to the trigger output of another
system component or control system that supplies a trigger
voltage. Whenever the unit detects a voltage between 5V and
12V DC at this connection, it will turn On from Standby. When
the trigger signal at this connection ceases, the unit will enter
the selected Standby mode. (See illustration)

AC Mains connector:

This connector provides AC power to the
unit when the supplied power cord is connected from it to an AC
electrical outlet. Unplug the preamplifier from the AC wall
outlet during lightning storms and extended periods of non-use.

Power switch:

this mechanical switch turns the unit’s power
supply on or off. During normal operation, do not use the Power
switch to power off the unit; instead, use the Standby button.

Standby button:

press this button to put the unit into and out of

the selected Standby mode.

Input buttons:

press these buttons to select the desired input.
The name and volume level of the selected input are indicated
on the front-panel display.

Volume buttons:

press these buttons to adjust the volume level
of the Balanced outputs––and the Single-Ended outputs if you
have set them to Variable in the Setup menu, or the Headphone
output if you have connected headphones. The minimum
volume level is OFF; the maximum volume level is determined
in the Setup menu.

Whenever you select an input, the unit applies the volume offset
selected for it in the Setup menu to the Main output volume
level (and to the Line output volume level if you have set it to
Variable in the Setup menu).

Setup button:

press this button to display the Setup menu, which
you can use to customize the preamplifier to suit your individual
preferences, listening space and other system components.
The Setup LED on the front panel illuminates when the Setup
menu is active.

N0 526 / N0 523 DUAL-MONAURAL PREAMPLIFIER / OWNER’S MANUAL

9

GETTING STARTED

Mute button:

press this button to mute and unmute the level
of the Balanced outputs––and the Single-Ended outputs if you
have set them to Variable in the Setup menu, or the Headphone
output if you have connected headphones––by the amount
determined in the Setup menu. The Mute LED on the front panel

lights when the mute function is active.

Enter button:

press this button to select or deselect a menu

item when the Setup menu is displayed.

N0526 only: press the Enter button to display the Sampling
rate when one of the digital inputs is selected (this function
is disabled when PLL Lock is set to Wide).

Balance buttons:

press this button to edit the left-to-right
channel balance sent to the Balanced outputs, Single-Ended
outputs if set to Variable in the Setup Menu, or Headphone output
if headphones are connected. The Balance LED illuminates
when Balance adjustment is active. It also illuminates when
Balance adjustment is inactive if the left-to-right channel
balance is offset from 0.

Clari-Fi® button (N0526 only): pressing this button activates
or deactivates HARMAN Clari-Fi music restoration
technology. After turning Clari-Fi on, the unit will display
the Clari-Fi Intensity menu, which can be adjusted from 0
to 9 using the Volume buttons.

Clari-Fi can be applied to digital input sources only.

Polarity button:

pressing this button inverts the absolute
polarity of the signal at the outputs. The Polarity LED on the
front panel illuminates when the signal’s polarity is inverted.

Display button:

press this button to change the intensity of the
front-panel display. Multiple presses of the Display button cycle
through the available brightness levels: High, Medium, Low, Off.
If the display is Off and the unit is On, press the Display button
to turn the display on.

USB transport control buttons (N0526 only): when the
USB Type-B input is selected and software that supports
external USB controls (such as Apple iTunes®), these
buttons control playback.

10

N0 526 / N0 523 DUAL-MONAURAL PREAMPLIFIER / OWNER’S MANUAL

QUICK SETUP AND LISTEN

QUICK SETUP AND LISTEN

REMOTE CONTROL

Your remote control comes with two preinstalled AAA alkaline
batteries. To replace the batteries, remove the remote control’s
battery cover using the included screwdriver, insert the batteries
and replace the battery cover. Be sure to observe proper battery
polarity.

When using the remote control, aim it toward the front-panel IR
receiver. Make sure that no objects, such as furniture, block the
remote’s view of the receiver. Bright lights, fluorescent lights,
and plasma video displays may interfere with the function of the
remote.

• The remote has a range of about 17 feet (5m), depending on

the lighting conditions.

• You can use the remote at an angle of up to 45°.

• Placing the unit behind tinted glass will reduce the remote

control’s effective range.

INITIAL CONNECTIONS

CAUTION: Before making connections, make sure the
preamplifier and all associated components are powered off
and disconnected from electrical outlets.

1. Connect your amplifier(s) to the preamplifier’s output
connectors. Mark Levinson recommends using the Balanced
output connectors if your amplifier(s) have balanced input
connectors. Otherwise, use the Single-ended output
connectors.

2. Connect analog source components’ outputs to the preamp’s
analog audio inputs. Mark Levinson recommends using
Balanced connections whenever they are available.

3. (N0526 only) Connect digital source components’ outputs

to the preamp’s digital audio inputs. If you are connecting
a computer via USB, download and install the USB driver
software from the product web page at marklevinson.com,
under the Downloads tab.

4. Connect the supplied power cable to the preamp’s AC Mains
connector and into an electrical outlet. Turn the rear-panel
Power switch on the preamp to On, and turn on all associated
components.

5. Press the front-panel Standby button or the Standby button
on the remote control.

6. Turn the Input knob or press the Input buttons on the remote
to select the input that corresponds to an input connector to
which you connected a source component.

7. Make sure the preamp’s volume is set to a reasonable level.
It is best to start low and turn up to avoid unintentionally
damaging your equipment. Begin playing the selected source
device.

ENGLISH

N0 526 / N0 523 DUAL-MONAURAL PREAMPLIFIER / OWNER’S MANUAL

11

QUICK SETUP AND LISTEN

N0 526 connections

TURNTABLE

BALANCED

ANALOG SOURCE

COMPONENT

COMPUTER

TO USB

PORT

main outputs

Designed and assembled in U.S.A.

Harman International Industries, In c.

O

526

PREAMPLIFIER N

S/N

TWO-CHANNEL

AMPLIFIER OR TWO

MONAURAL AMPLIFIERS

RIGHT

SPEAKER

analog audio inputs

1 2

phono inputs

ground tfelthgir

3 4 5

RS-232

out

trigger

in

out

DIGITAL SOURCE

COMPONENT

TO DIGITAL

OUTPUT

1

IR

analog audio inputs

345

2 3 4 5 6

01001000100100

12

digital audio inputs

main outputs

~ ac mains

120W

LEFT

SPEAKER

12

N0 526 / N0 523 DUAL-MONAURAL PREAMPLIFIER / OWNER’S MANUAL

N0 523 connections

TURNTABLE

BALANCED

ANALOG SOURCE

COMPONENT

QUICK SETUP AND LISTEN

ENGLISH

main outputs

Designed and assembled in U.S.A.

Harman International Industries, In c.

O

523

PREAMPLIFIER N

S/N

TWO-CHANNEL

AMPLIFIER OR TWO

MONAURAL AMPLIFIERS

RIGHT

SPEAKER

analog audio inputs

1 2

phono inputs

ground tfelthgir

3 4 5

RS-232

trigger

in

out

out

IR

345

analog audio inputs

12

main outputs

~ ac mains

120W

LEFT

SPEAKER

N0 526 / N0 523 DUAL-MONAURAL PREAMPLIFIER / OWNER’S MANUAL

13

SETUP MENU

SETUP MENU

SETUP MENU NAVIGATION

Pressing the Setup button displays the Setup menu on the
preamplifier’s front-panel display. When the Setup menu is
active…

• use the Input knob to scroll through options,

INPUT SETUP

SETUP MENU

Input Setup
Volume Control
Power Management
Display
Advanced
Output Setup

ENTER

SETUP

INPUT SETUP

Set Input A1 XLR 1
Set Input A2
Set Input A3
Set Input A4

Set Input A5
Set Input Phono
Set Input D1
Set Input D2
Set Input D3
Set Input D4
Set Input D5
Set Input D6

XLR 2

RCA 1

RCA 2

RCA 3

(A6)

AES/EBU

Coax 1

Coax 2

Optical 1

Optical 2

USB

ENTER

• use the Enter button to select and deselect options,

• use the Volume knob to adjust parameters, and

• to move back a level in the menu structure or exit the Setup
menu, press the Setup button repeatedly until the desired
menu is shown in the display.

ANALOG INPUT SETTINGS (A1-A5)

Setup Name
Setup Offset
Setup SSP
Setup +6dB Gain

see naming options

Offset=0.0 dB (default)

SSP=Off (default)

+6dB Gain=Off (default)

PHONO INPUT SETTINGS (A6)

Setup Name
Setup Offset
Setup Phono Type
Setup Ph Gain
Setup Ph Balance
Setup Infra Filt
Setup R Load
Setup C Load

see naming options

Offset=0.0 dB (default)

Ph Type=MM (default)

MC type only

Balance= 0.0 dB (default)

Infra Filt=Off (default)

MC type only

MM type only

SETUP

The Input Setup menu allows you to customize the following
parameters for the selected input:

The following settings are available for all inputs.

Name:

this option offers a choice of preset names for the
selected input (CD, SACD™, DVD, Blu-ray™, DAC, EQ, Input
[number], [Input type], [Input connector]. Additionally, the
following special functions are available for each input:

Unused: this option removes the selected input from the list
of available inputs. The input will be skipped when selecting
the active input.

14

N0 526 / N0 523 DUAL-MONAURAL PREAMPLIFIER / OWNER’S MANUAL

DIGITAL INPUT SETTINGS (D1-D6)

Setup Name
Setup Offset
Setup Clari-Fi
Setup PCM Filter
Setup PLL Lock
Setup DSD Filter

see naming options

Offset=0.0 dB (default)

Clari-Fi=Off (default)

Filter=Fast (default)

PLL Lock=Normal (default for D1-D5 only)

Filter=47k (default for USB (D6) only)

Manual Entry: This option allows you to enter a custom name
for the selected input, and is available when you select the
input name that alternately flashes with a row of underscores.

• Press Enter to begin editing the name; the first character
of the name will flash.

• Use the Volume knob to choose from the list of available
characters.

• You can press Enter, or rotate the Select knob to move
to the next character. You may rotate the Select knob to
move in either direction within the name; pressing Enter
will only move the cursor to the right.

SETUP MENU

• When the name is set to your liking, press Enter and it
will be saved. The name will be automatically saved if
you press Enter or rotate the Select knob clockwise after
setting the eighth character. The preamplifier will display
“Saving Data” to indicate success.

• If you wish to exit without saving any changes, press Setup.
The preamplifier will display “RESTORING” to indicate
your edits were discarded and the name will remain as it
was before

Offset:

the output level of audio devices can vary between brands
and models, making some devices sound louder or quieter
than others. The Offset adjustment allows you to precisely
compensate for that variance, allowing all associated devices in
your system to output at a similar volume level.

The setting offers a range of –12.0dB to +12.0dB, in 0.1dB steps.
Whenever an input is selected, the preamp applies the setting
of the Offset parameter to the volume level of the outputs.

SSP:

the SSP setting configures the selected input for complete
integration with a multichannel surround sound processor. See
the SSP Setup section of this manual for more information.
(Note: The SSP setting is only available for analog inputs.)

THE FOLLOWING SETTINGS ARE AVAILABLE FOR THE
DIGITAL INPUTS. (N

DSD Filter

: The DSD filter option is only available on the

0

526 ONLY)

USB digital input (D6) of the No. 526 and has selectable
values of 47 (default), 50, 60, and 70 KHz. Users can
experiment with different values to suit their preferences
when listening to DSD material through the USB input.

PCM Filter

Fast

: this setting lets you set the filter characteristic:

: this filter has a steep roll-off characteristic that
may be better suited when listening to electric or
electronic music

Slow

: this filter has a gradual roll-off characteristic that

is well suited to most types of music
Mphase: this is a minimum-phase filter that may be

better suited when listening to acoustic music
Although the above descriptions are offered as a guide,

feel free to set the PCM filter according to your own
tastes

Clari-Fi

: setting this option to ON activates HARMAN
Clari-Fi® music restoration technology for the selected
input. Clari-Fi analyzes compressed digital audio files
during playback and reconstructs what was lost in the
compression process. The Intensity control adjusts the
amount of reconstruction applied to the signal, and can
be applied according to your individual taste – there is no
“correct” amount.

PLL Lock

: this option selects between DAC DPLL
Bandwidth settings of Normal or Wide. Set to “Wide” if
you consistently experience dropouts or noise in the audio;
otherwise leave this setting at “Normal”.

+6dB Gain:

setting this option to ON adds +6dB gain to the

selected input for source components with low output voltage.

The following settings are available for the Phono input.

Phono Type:

this setting enables selection of moving-magnet
(MM) or moving-coil (MC) cartridge. For best performance be
sure to verify your phono cartridge type before adjusting these
settings.

R Load (Resistive Loading):

this option sets moving-coil (MC)

cartridges’ resistive loading between 20 and 47k ohms.

C Load (Capacitive Loading):

this option sets capacitive loading

between 50 and 680 pF for moving magnet (MM) cartridges.

Infrasonic Filter:

this option sets the infrasonic “rumble” filter

on or off.

Gain:

this option selects High, Medium, or Low gain for MC

cartridges.

Balance:

this option applies balance from L 3dB to R 3dB in 0.1

dB steps to the Phono input.

ENGLISH

N0 526 / N0 523 DUAL-MONAURAL PREAMPLIFIER / OWNER’S MANUAL

15

SETUP MENU

SETUP MENU

SETUP MENU

VOLUME CONTROL

Input Setup
Volume Control
Power Management
Display
Advanced
Output Setup

Volume Control settings let you customize the performance of the
preamp‘s Volume and Mute functions.

Max Vol:

0.1dB increments between 40.0dB and 80.0dB. The factory default
maximum volume is 80.0dB.

Mute:

this setting lets you set the amount of line output level
attenuation that occurs when the Mute button is engaged, in 0.1dB
increments between –10dB and –80.0dB. The factory default mute
attenuation is –40dB.

Turn On:

this setting lets you set a line output volume level to which

your preamp will default every time you turn it on.

o 10.0dB – 60.0dB: choose a turn-on volume level in 0.1dB

o Last: the volume level setting from the previous time the

CAUTION: setting the Turn-On parameter to Last can result in
louder-than-expected power-up volume if the preamp was set to a
high volume level setting when last powered down.

Taper:

this setting lets you choose the desired taper for the volume
control, from the following options:

Mode 1

volume will change. Rotating the knob slowly slows the rate the
volume changes, allowing you to make very precise adjustments
in the listening level. This is the factory default setting.

Mode 2

more gain change for a similar range of knob travel.

Mode 3

through the low volume range, and then decelerates in the higher
range, for precision adjustments. When decreasing the volume the
control works in the opposite fashion, changing quickly through
the high volume range and decelerating in the lower range.

ENTER

SETUP

VOLUME CONTROL

Volume Max
Volume Mute
Volume Turn On
Volume Taper

Max=80.0 dB (default)

Mute=-40.0 dB (default)

Turn On=10.0 dB (default)

Taper=Mode 1 (default)

this setting sets the maximum line output volume level in

increments between 10.0db and 60.0db. The factory
default setting is 10.0dB.

unit was powered down is retained.

: the faster you rotate the volume knob the more quickly the

: Similar to Mode 1, with a “faster” response curve, with

: When increasing the volume the volume changes quickly

POWER MANAGEMENT AND DISPLAY

Input Setup
Volume Control
Power Management
Display
Advanced
Output Setup

The Power Management and Display parameters let you
customize power-related functions.

Standby:

following options:

Green

: this mode removes power from almost all of the
circuits, allowing the unit to be activated only via an IR control
signal, a 5V – 12V trigger voltage or a press of the Standby
button. This mode provides maximum power conservation
and is the factory-default Standby mode.

Power Save

circuits, but keeps the control circuitry powered and ready
to receive commands from either the front-panel controls
or the remote control. This mode provides moderate power
conservation.

Normal

outputs, but keeps all of the control and audio circuits
powered. This mode provides the least amount of power
conservation but allows the audio circuits to remain warmed
up to deliver optimal performance at all times.

Auto Off:

function, which puts your preamp into the Standby mode after
20 minutes of inactivity (no audio signal, and no control input).

Display:

this menu gives you access to the following display

parameters:

Intensity

to High, Med, Low, or Off (which turns the display off entirely
until a control is operated). The factory default setting is High.

Timer

(only takes effect when the display intensity is set to
Off): lets you choose how long the display remains lit after
the last time a control is operated. Choose from 10 seconds,
4 seconds, or 2 seconds. The factory default setting is 10
seconds.

ENTER

SETUP

POWER MANAGEMENT

Standby
Auto Off

Standby=Green (default)

Auto Off=On (default)

this setting lets you set the Standby mode to one of the

: this mode removes power from the audio

: this mode shuts off the display and mutes audio

this setting lets you engage or disengage the Auto Off

: lets you set the brightness of your preamp’s display

16

N0 526 / N0 523 DUAL-MONAURAL PREAMPLIFIER / OWNER’S MANUAL

ADVANCED

Advanced

Setup Menu

Input Setup
Volume Control
Power Management
Display
Advanced
Output

The Advanced section of the Setup menu gives you access
to a range of configuration and administrative settings and
functions.

Firmware:

related functions:

Version

firmware. (This setting is informational only, and does not
provide any adjustments.)

Update

from a flash drive inserted in the rear-panel USB Type A
port or from a connected computer over the Ethernet
connection. (If you press Enter when ENET is selected, the
preamp’s display shows “Start Download” to remind you to
connect via a browser and begin downloading the firmware.)
To update via a flash drive:

1. Select USB and press Enter.

2. The preamp will read the USB drive. The display will show

3. When the preamp finds a valid firmware file on the drive,

• If the preamp does not find a valid firmware file on the

Connect:

you made to your preamp: Ethernet (default), or RS232.

Config:

configuration settings.

Export

information to a thumb drive inserted in the rear-panel
USB Type A port. This data can then be used to identically
configure other preamplifiers, or serve as a backup so you
can easily reconfigure your preamp.

Firmware
Connect
Config
Network
Trigger1
Trigger2
Front IR

this menu gives you access to the following firmware-

: displays the version number of the currently loaded

: lets you update your preamp’s firmware, either

“Check updates…” while the drive is being read

the display will show “Updating…”

drive, the display will show “Not Available.”

this menu lets you select the type of control connection

this menu lets you import or export Setup menu

: press Enter to export all setup configuration

SETUP MENU

Import

: press Enter to import all setup configuration
information from a thumb drive inserted in the rear-panel
USB Type A port.

Lock

: engage the Lock to prevent accidental changing of

Setup menu parameters. The factory default setting is Off.

Restore

default condition.

Network:

related parameters:

Name

network name (the X’s represent the last three digits of the
unit’s unique MAC address). This setting is informational only
and does not provide any user adjustments.

DHCP

configuration) on or off. The factory default behavior is
On. When the mode is set to Off, you can specify static IP
and Subnet addresses for your preamp. Selecting Renew
(available only when DHCP is set to On) refreshes your DHCP
configuration, assigning a new IP address to your preamp.
This function is often useful when troubleshooting a network
connection.

Current IP

DHCP or manually) to your preamp.

Current subnet

(by DHCP or manually) to your preamp.

Current Gateway

assigned (by DHCP or manually) to your preamp.

Manual Entry

to enter a static IP, Subnet, and Gateway address. Holding
the Enter button longer than two seconds will start Editing
Mode. Use the Select knob to select the character you want
to change, use the Volume control to choose from the list of
available characters and press the Enter button to confirm
each character. After the last character is entered or Enter
button has been held longer than two seconds, the new
address will be saved.

Trigger:

is sent and received. Most components require this to be set
at “Normal,” but some products (such as some older Mark
Levinson components) require that it be set to Pulsed. There
are two triggers available. The menu options allow user to
disable trigger and set up the delay time.

Front IR:

on or off. If you have connected the unit’s rear-panel IR input
to an IR control device, set the Front IR receiver to Off to avoid
interference.

: lets you restore all parameters to their factory-

this menu offers access to the following network-

: N0526XXX or N0523XXX: Displays your preamp’s

: lets you toggle DHCP mode (network auto-

: shows the IP address currently assigned (by

: shows the subnet address currently assigned

: shows the gateway address currently

: this option (only when DHCP is off) allows you

this setting configures how the 12V trigger relay data

this menu allows you to turn the unit’s front IR receiver

ENGLISH

N0 526 / N0 523 DUAL-MONAURAL PREAMPLIFIER / OWNER’S MANUAL

17

SETUP MENU

SETUP MENU

OUTPUT

Input Setup
Volume Control
Power Management
Display
Advanced
Output Setup

The Output section of the Setup menu lets you configure the
outputs.

Line Out:

outputs to Fixed, Variable or High Pass Filter:

Fixed

: use this setting when you have connected the Balanced
or Single-ended outputs to a recording device. The outputs
will remain at a fixed level regardless of the volume control
level.

Variable: This is the default setting.

have connected the Balanced or Single-ended outputs to a
powered subwoofer or to an external amplifier. The output
level will vary with the level of the volume control.

High Pass

octave, 4th-order Butterworth 80Hz high-pass filter on the
Balanced or Single-ended outputs. If you have connected a
powered subwoofer to one of the outputs and want to restrict
the low frequencies sent to your system’s main speakers, set
the High Pass filter to On for the output connected to your
speakers’ power amplifier(s). Note: the Headphone output is
always full-range and Variable.

Headphone:

for the Headphone output. The factory default setting is Low
Impedance, which works with all kinds of headphones. Some
listeners may prefer the High Impedance setting when using
higher impedance headphones. There is no “correct” setting;
use what you prefer.

ENTER

SETUP

OUTPUT SETUP

XLR Line Out
RCA Line Out
Headphone

Mode=Variable (default)

Mode=Variable (default)

Impedance=Low (default)

this menu lets you set the Balanced and Single-ended

use this setting when you

: this menu allows you to activate a 24dB-per-

this menu lets you select Low or High Impedance

18

N0 526 / N0 523 DUAL-MONAURAL PREAMPLIFIER / OWNER’S MANUAL

SSP SETUP

SSP SETUP

In the past, the differing number of channels in each component
made integration between two-channel and multichannel
components difficult. Sending multichannel processor output
signals to a stereo Preamplifier distorts calibrated processor output
levels. Multichannel processor volume controls adjust the relative
volume level of all channels in unison. However, stereo Preamplifier
volume controls adjust the relative volume level of just the front left
and right channels, leaving the center, surround, and subwoofer
channels unaffected.

To avoid these problems when the preamplifier is connected with an
associated surround sound processor, the SSP Mode allows selected
input sources to pass through the preamp without interference. When
SSP Mode is activated, the preamp’s volume control is deactivated
to prevent the preamp from distorting channel balance. As a result,
the processor controls the relative volume level of all channels while
maintaining its calibrated output levels.

To connect the preamp with a surround sound processor:

1. Make sure the preamplifier and all associated components are
powered off and disconnected from electrical outlets.

2. Connect the output connectors on the surround-sound source
component to the input connectors on the surround-sound
processor. For example, if the source component is a Blu-ray
disc player, connect it to the appropriate input connectors on the
surround sound processor.

3. Connect the front left and right output connectors on the processor
to the desired analog input connectors on the
preamplifier. For best performance, use balanced connections
whenever possible.

4. Connect the center, surround, and subwoofer output connectors
on the processor to the appropriate input connectors on the power
amplifier(s).

5. Connect the preamplifier’s outputs to the amplifier(s) connected
to the system’s left and right (main) speakers.

N0526 or N0523

To activate SSP Mode for a selected input:
CAUTION: Before activating the SSP mode for any input, set

the associated surround sound processor volume control to a
reasonable level to prevent sending dangerous signal levels to the
associated loudspeakers.

1. Activate the Setup menu by pressing the Setup button

2. Select Input Setup, and press Enter

3. Select the analog input you wish to configure for SSP use, and
press Enter

4. Select SSP, and press Enter

5. Set the SSP parameter to On, and press Enter

6. Press the Setup button four times to step backward through the
menu hierarchy and exit the Setup menu

ENGLISH

N0 526 / N0 523 DUAL-MONAURAL PREAMPLIFIER / OWNER’S MANUAL

19

N0 526 / N0 523 SSP SETUP

SURROUNDSOUND

SOURCE DEVICE

OpticalCoaxial RL

Analog OutputDigital Output

SURROUNDSOUND

PROCESSOR

PREAMPLIFIER

main outputs

O

526

PREAMPLIFIER N

Designed and assembled in U.S.A.

S/N

Harman International Industries, Inc.

Composite Video Inputs Component Video Inputs

Microphone Inputs

Analog Audio Outputs

Right

analog audio inputs

12

phono inputs

ground

312

122

12

43

Front

Left

345

lthgir

S-Video Inputs

312

312

3

Digital Audio Inputs

1

645

Analog Audio In 1Analog Audio In 2

RR

LL

Subwoofer 1 Subwoofer 2

Center

Right

tfe

Y/G

645

3

Left

IR

1

Pb/B Pr/R

RS-232

HDMI OutputsHDMI Inputs

12

ASE/EBU Inputs

12

Right

out

Y/G

Monitor

Analog Audio Inputs

3

L

R

Left

trigger

2

Out

out

Pb/B Pr/R

Component Video Output

Y

4

3

Pb/B Pr/R

Y/G

Pr

Pb

Link

IR Input

56

FL

L

FR SUB

R

Surround

Right

Left

in

analog audio inputs

345

1

2345 6

Y/G

RS-232

Trigger Outputs

7.1 Channel Input

CTR SL

SR BR

Surround

Back

Right

Left

digital audio inputs

4

12

Pb/B Pr/R

AC Input

BL

Ethernet

Remote Zone

Left

Right

main outputs

~ ac mains

120W

LEFT & RIGHT

POWER AMPLIFIER

To Right Speaker

To Left Speaker

CENTER & SURROUND

POWER AMPLIFIER

single ended

outputs

To Center &

Surround
Speakers

20

N0 526 / N0 523 DUAL-MONAURAL PREAMPLIFIER / OWNER’S MANUAL

balanced

balanced

inputs

inputs

single ended

outputs

balanced

inputs

single ended

outputs

TROUBLESHOOTING

TROUBLESHOOTING

Incorrect operation is sometimes mistaken for malfunction. If problems occur, see this section for troubleshooting information. If
problems persist, contact your authorized Mark Levinson dealer.

NO POWER

Examine the power cord to ensure that it is connected to both the AC mains connector and a working, unswitched electrical outlet.

Make sure the preamp is powered on with the rear-panel Power switch. Examine the electrical circuit breaker to ensure that power is being
supplied to the electrical outlet to which the preamp is connected.

Make sure the preamp is not in standby. The front-panel standby LED illuminates fully and continually when the preamplifier is On. The LED flashes
slowly when the preamp is in Standby mode.

REMOTE CONTROL DOES NOT OPERATE

Eliminate obstructions between the remote control IR transmitter and the IR receiver on the front-panel display. Make sure the rear-panel IR input
connector is not being used.

Make sure the remote control is positioned within 17 feet (5m) of the front panel. If the chassis is placed inside a glass cabinet, tinted glass will
reduce the remote control range.

Make sure the remote control signal is being received at the IR receiver on the front-panel display at a reasonable angle.

Make sure the IR receiver on the front-panel display is not exposed to strong sunlight, halogen light, or fluorescent light. This can cause IR
reception to become unreliable.

Replace the remote control batteries.

NO SIGNAL AT THE OUTPUTS

Examine all audio cables to ensure a solid connection between the preamplifier and all associated components. Examine the speaker cables to
ensure a solid connection between the speakers and the amplifiers. Make sure that the connected speakers are operational. Make sure the volume
is set to an audible level.

Make sure the mute is deactivated. Make sure the Offset setting for the selected input is not reducing the volume to an inaudible level. Make sure
all associated components are connected to working electrical outlets and powered on. Make sure the source device connected to the preamp’s
selected input is producing an output signal.

ENGLISH

MISSING INPUT

Make sure the Name parameter for the selected input has not been set to Unused in the Setup menu.

DIGITAL AUDIO DROPOUTS

Set PLL Lock to Wide for the digital input exhibiting the dropout problem.

N0 526 / N0 523 DUAL-MONAURAL PREAMPLIFIER / OWNER’S MANUAL

21

TROUBLESHOOTING

AUDIO HUM

Disconnect components one at a time to isolate the problem.

Once the problem is identified, make sure the problematic component is properly grounded and connected to the same electrical circuit as the
preamp.

VOLUME CAN’T BE SET TO MAXIMUM

You have the option of establishing a maximum volume level in the Setup menu. If this option is set, it can prevent the unit’s maximum volume level
of 80.0 from being reached. Refer to Volume Control / MaxVol for more information.

FRONTPANEL DISPLAY NOT WORKING

Verify that the Intensity parameter in the Setup menu is not set to Off.

NO NETWORK CONNECTIVITY

Verify that the network cables are properly connected between the router, switch or hub and the preamp.

Verify the age of the router, switch or hub. If the router, switch or hub is more than ten years old, there may be a communication issue with the
preamp. Power cycle the preamp and use a newer router, switch or hub between the network and the preamp.

IF ALL ELSE FAILS…

Make sure the display is not turned off by pressing the display button.

Disconnect the AC power cord from the unit. Pull out the fuse drawer and inspect the fuses, making sure the wire inside is not broken and that the
glass envelope is not discolored. Replace fuses if necessary.

Power cycle the preamp with the rear-panel Power switch, waiting at least 10 seconds between powering the unit off and on.

Restore factory-default settings (See Advanced: Config / Restore).

Contact your authorized Mark Levinson dealer.

Contact Mark Levinson Customer Service at 888-691-4171 or marklevinson.com.

22

N0 526 / N0 523 DUAL-MONAURAL PREAMPLIFIER / OWNER’S MANUAL

MARK LEVINSON N0 526 AND N0 523 SPECIFICATIONS

LINE STAGE

SPECIFICATIONS

Gain

• Normal gain setting

• High gain setting

• Fixed mode, normal gain setting

• Fixed mode, high gain setting

Frequency response

• 20Hz to 20kHz

• 0.4Hz to 370kHz

Total harmonic distortion plus noise (THD+N)

• at 1kHz (2V

• at 20kHz (2V

single-ended or 4V

RMS

single-ended or 4V

RMS

balanced output)

RMS

RMS

Signal-to-noise ratio

• 20Hz to 20kHz, wideband, unweighted

• A-weighted

• Reference to 2V
4V

balanced output, max volume

RMS

single-ended or

RMS

Crosstalk

• at 1kHz

• at 20kHz
Channel separation
High-pass filter
Volume control

SINGLEENDED (RCA) INPUTS

balanced output)

13.5dB balanced; 7.5dB single-ended

19.5dB balanced; 13.5dB single-ended

3.0dB balanced; –3.0dB single-ended

9.0dB balanced; 3.0dB single-ended

±0.02dB
+0.1 / -3dB

<0.003%
<0.005%

>97dB
>100dB
>115dB @ 1kHz

>105dB @ 20kHz (spot noise)

<-107dB
<-82dB
below noise floor (>115dB @ 1kHz)
defeatable 80Hz, 4th order (24dB/octave) Butterworth
balanced, current mode, discrete 15-bit R-2R ladder

ENGLISH

• Input impedance >45kΩ

• Maximum input level normal gain setting: >10V

BALANCED (XLR) INPUTS

• Input impedance >45kΩ

• Maximum input level normal gain setting: >15V

SINGLEENDED (RCA) OUTPUTS

• Output impedance <80Ω

• Maximum output level >11V

RMS

BALANCED (XLR) OUTPUTS

• Output impedance <160Ω

• Maximum output level >22V

RMS

, high gain setting: >7V

RMS

, high gain setting: >7.5V

RMS

RMS

RMS

N0 526 / N0 523 DUAL-MONAURAL PREAMPLIFIER / OWNER’S MANUAL

23

HEADPHONE OUTPUT

• Output impedance

• Maximum output, low impedance setting
30Ω (0.3W), 20Hz to 20kHz, <0.1% THD
300Ω, 20Hz to 20kHz, <0.1% THD

• Maximum output, high impedance setting
300Ω, 20Hz to 20kHz, <0.1% THD

• Total harmonic distortion plus noise (THD+N)
20Hz to 20kHz, 2V
20Hz to 20kHz, 2V

at 30Ω

RMS

at 300Ω

RMS

PHONO STAGE

• RIAA frequency response

• Infrasonic filter

Moving Magnet mode

• Input resistance

• Input capacitance

• Gain

• Total harmonic distortion plus noise

• Signal-to-noise ratio (Referred to 2V

• Maximum input level

Moving Coil mode

• Input resistance

• Input capacitance

• Gain

• Total harmonic distortion plus noise

• Signal-to-noise ratio (Referred to 2V

• Maximum input level

output)

RMS

output)

RMS

selectable; <3Ω or 75Ω

>3V

RMS

>9V

RMS

>7V

RMS

<0.03%
<0.01%

20Hz to 20kHz, ±0.3dB
defeatable, 15Hz, 2nd order (12dB/octave)

47kΩ
selectable; 50, 100, 150, 200, or 680pF
40dB @ 1kHz
<0.03%, 20Hz to 20kHz, 2V

RMS

output

>97dB (20Hz to 20kHz, wideband, unweighted)
>102dB (A-weighted)
>110dB @ 20Hz to 20kHz (spot noise)
>95mV @ 1kHz; >285mV @ 20kHz

selectable; 20, 33, 50, 66, 100, 200, 330, 500, 1000, or 47kΩ
50pF
selectable; 50, 60, or 70dB @ 1kHz

50dB gain setting: <0.02%, 20Hz to 20kHz, 2V
60dB gain setting: <0.02%, 20Hz to 20kHz, 2V
70dB gain setting: <0.04%, 20Hz to 20kHz, 2V

RMS

RMS

RMS

output
output
output

50dB gain setting: >87dB (20Hz to 20kHz, wideband, unweighted)
50dB gain setting: >94dB (A-weighted)
50dB gain setting: >100dB at 20Hz to 20kHz (spot noise)
60dB gain setting: >77dB (20Hz to 20kHz, wideband, unweighted)
60dB gain setting: >84dB (A-weighted)
60dB gain setting: >90dB at 20Hz to 20kHz (spot noise)
70dB gain setting: >68dB (20Hz to 20kHz, wideband, unweighted)
70dB gain setting: >74dB (A-weighted)
70dB gain setting: >80dB at 20Hz to 20kHz (spot noise)

50dB gain setting: >30mV @ 1kHz; >105mV @ 20kHz
60dB gain setting: >9.5mV @ 1kHz; >90mV @ 20kHz
70dB gain setting: >3.2mV @ 1kHz; >30mV @ 20kHz

DIGITALTOANALOG CONVERTER (N0526 ONLY)

• Output voltage

• Frequency response

• Total harmonic distortion

• Signal-to-noise ratio (Referred to 3.7V

• Sample rates/bit depth

• PCM

• DSD

24

N0 526 / N0 523 DUAL-MONAURAL PREAMPLIFIER / OWNER’S MANUAL

/ 0dBFS output)

RMS

3.7V

@ full scale (0dBFS)

RMS

20Hz to 20kHz, +0 / –0.2dB

<0.0001% @ 1kHz, full scale (0dBFS)
<0.0003% @ 20kHz, full scale (0dBFS)

>117dB (20Hz to 20 kHz, wideband, unweighted)
>120dB (A-weighted)

32, 44.1, 48, 88.2, 96, 176.4, or 192kHz; up to 32 bits
Native or DoP (DSD over PCM), single- and double-speed (2.8 and

5.6MHz)

GENERAL

• Analog audio connectors
Line inputs
Phono input
Outputs

• Digital audio input connectors (N0526 only)
Balanced
Coaxial
Optical
USB asynchronous

• Control connectors
RS-232
Infrared (IR)
DC triggers

Ethernet
USB

• Mains voltage

• Power consumption
Standby, Green mode
Standby, Power Save mode
Standby, Normal mode
Power on, idle
Power on, idle, headphones connected

• Dimensions
Unit

With Packaging

3 pairs single-ended (RCA), 2 pairs balanced (XLR)
1 pair single-ended phono inputs (RCA), 1 phono ground binding post
1 pair single-ended line (RCA), 1 pair balanced line (XLR), 1 TS ¼”
(6.3mm) headphone

1 AES/EBU (XLR)
2 S/PDIF (RCA)
2 Toslink
1 USB Type B)

1 RJ-12
1 ⅛” (3.5mm) phone jack
2 programmable 12V outputs (⅛” / 3.5mm phone jack), 100mA maximum
1 programmable 12V input (⅛” / 3.5mm phone jack)
1 RJ-45
1 USB Type A, 1 Micro USB
100VAC, 115VAC, or 230VAC, factory set

0.4W
5W
72W (N0526); 67W (N0523)
75W (N0526); 70W (N0523)
88W (N0526); 83W (N0523)

Height: 3.97” (101mm)
Height without feet: 3.45” (88mm)
Width: 17.25”/438mm
Depth: 19.10” (485mm)
Weight: 41 lbs. (18.6kg)

Height: 17” (432mm)
Width: 26” (660mm)
Depth: 26” (660mm)
Weight: 60 lbs. (27.2kg)

ENGLISH

HARMAN International Industries, Incorporated
8500 Balboa Boulevard
Northridge, CA 91329 USA

© 2016 HARMAN International Industries, Incorporated. All rights reserved.
Mark Levinson and Clari-Fi are registered trademarks of HARMAN International Industries,

Incorporated. Blu-ray is a trademark of the Blu-ray Disc Association. SACD (Super Audio CD) is
a trademark of Sony Corporation. Other company and product names may be trademarks of the
respective companies with which they are associated.

This document should not be construed as a commitment on the part of HARMAN International
Industries, Incorporated. The information it contains, as well as the features, specifications and
appearance of the product, is subject to change without notice. HARMAN International Industries,
Incorporated, assumes no responsibility for errors that may appear within this document.

For customer service and product shipment information, refer to our website: marklevinson.com
Part No. 070-90027 Rev: 2.0

N0 526 / N0 523 DUAL-MONAURAL PREAMPLIFIER / OWNER’S MANUAL

N0523: MSIP-REM-HOE-Model523
N0526: MSIP-REM-HOE-Model526

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MANUAL DEL PROPIETARIO

DEL PREAMPLIFICADOR DUAL-MONOAURAL

526
523

ÍNDICE / ACERCA DE ESTE DOCUMENTO

ÍNDICE

Acerca de este documento 29

Características de diseño especiales 30

Consideraciones de instalación 31

Desembalaje, colocación y ventilación, requisitos de alimentación, estados operativos

Introducción 33

Descripción general del panel delantero: Panel trasero, Descripción general del control remoto

Configuración rápida y audio 39

Control remoto, Conexiones iniciales

Menú de configuración 42

Navegación por el menú de configuración, Configuración inicial, Control de volumen,
Administración de energía y pantalla, Opciones avanzadas, Salida

Configuración SSP 47

ESPAÑOL

Resolución de problemas 49

Especificaciones 51

ACERCA DE ESTE DOCUMENTO

Este manual le permitirá configurar y ajustar con precisión el
comportamiento y rendimiento del preamplificador para adaptarlo
a sus preferencias y a las particularidades de su equipo y sala
de audio. Se recomienda especialmente que cumpla con las
indicaciones de este manual en el orden en el que se encuentran
redactadas de modo que comprenda las consideraciones de
seguridad antes de configurar este sofisticado preamplificador.

PREAMPLIFICADOR DUAL-MONOAURAL N0 526 / N0 523 / MANUAL DEL PROPIETARIO

29

CARACTERÍSTICAS DE DISEÑO ESPECIALES

CARACTERÍSTICAS DE DISEÑO ESPECIALES

Gracias por comprar un preamplificador dual-monoaural N° 526
o N° 523. La combinación del rendimiento analógico inigualable
de Mark Levinson con la configuración flexible del sistema y las
funcionalidades digitales y de audio avanzadas permite que estos
preamplificadores impulsen la reproducción del material de origen
a nuevos niveles de realismo.

Arquitectura

La base de estos preamplificadores radica en su ruta de señal
dual-monoaural, completamente equilibrada con acoplamiento
directo y discreta Pure Path exclusiva de Mark Levinson con
controles de volumen a intervalos R-2R equilibrados. Poseen relés
de conmutación de señales individuales para cada una de sus
entradas estéreo: dos equilibrados (XLR) y tres de único extremo
(RCA), más audio; y seis entradas digitales adicionales en el N°526.
Los controles de volumen usan intervalos R-2R de 15 bits discretos
y conmutadores analógicos de bajo ruido para alcanzar el más
amplio ancho de banda posible y la máxima integridad de la señal.
La integración y expansión del sistema son posibles si se utilizan
las salidas, que pueden funcionar a rango completo o con un filtro
de 80 Hz de cuarto orden intercambiable, y así permitir una perfecta
integración en los sistemas con subwoofer eléctricos.

Chasis del audio

Con un diseño basado en esta excelente plataforma analógica,
el N° 526 suma una funcionalidad de audio digital igualmente
impresionante. El convertidor digital a analógico Precision Link
de Mark Levinson con nueve suministros de energía individuales,
circuitos de eliminación de inestabilidad exclusivos y circuitos
I/V discretos y completamente equilibrados forma el núcleo de
la etapa de procesamiento de audio digital. Se proporcionan seis
entradas de audio digital, incluida una AES/EBU, dos coaxiales y
dos óptimas más un procesador de audio USB con capacidad para
la transferencia asíncrona de datos de DSD y PCM de alta resolución
a hasta 192 kHz, resolución de 32 bits. Para formatos de audio de
baja resolución, la tecnología de restauración de música exclusiva
HARMAN Clari-Fi® reconstruye la información y el ancho de banda
perdidos en formatos de archivo comprimidos. Los puertos de
integración y comunicación del sistema incluyen Ethernet, USB,
RS-232, entrada IR y entrada y salida de disparo de 12 V. Se incluye
un control remoto IR del sistema.

Estructura

El chasis de los preamplificadores usa una arquitectura modular
para aislar los circuitos analógicos y digitales críticos de bajo
nivel de las fuentes de alimentación. El chasis de acero y aluminio
extruido de la serie 6000 cuenta con disipadores térmicos internos
y la icónica apariencia de negro con detalles plateados de Mark
Levinson.

Características

• Ruta de señal dual-monoaural discreta exclusiva Pure Path de

Mark Levinson, completamente balanceada, con acoplamiento
directo

• Controles de volumen a intervalos R-2R equilibrados y discretos

• Entradas digitales: Asíncrona USB, AES/EBU equilibrada, dos

ópticas Toslink, dos coaxiales (N°526 solamente)

• Entradas analógicas: dos equilibradas, tres no equilibradas,

audio con pasador a tierra

• Salidas analógicas: par XLR balanceado, par RCA no balanceado,

auriculares de 1/4pulg. (6,3mm)

• Admite formatos de alta resolución que incluyen PCM de 32 bits

y 192 kHz y DSD de doble velocidad (N°526 solamente)

• Precision Link DAC de Mark Levinson que cuenta con el

reconocido procesador Sabre ESS de 32 bits (N°526 solamente)

• Fase de audio pura con ganancia seleccionable, filtro infrasónico,

configuración de cargas resistiva y capacitiva

• Filtro de paso alto de 80 Hz de cuarto orden seleccionable

permite la integración perfecta del subwoofer

• Modo SSP para conexión de paso directo (pass-through) a un

procesador de sonido envolvente de varios canales

• Circuito Main Drive de Mark Levinson para la reproducción

con auriculares: conector de panel delantero con amplificador
integral de Clase A

• Diseñado y elaborado en los Estados Unidos

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PREAMPLIFICADOR DUAL-MONOAURAL N0 526 / N0 523 / MANUAL DEL PROPIETARIO