McIntosh D100 Owners Manual

McIntosh Laboratory, Inc. 2 Chambers Street Binghamton, New York 13903-2699 Phone: [phone] www mcintoshlabs.com

D100

Digital Preamplifier

Owner’s Manual

The lightning ash with arrowhead, within an equilateral
triangle, is intended to alert the user to the presence of
uninsulated “dangerous voltage” within the product’s en­closure that may be of sufcient magnitude to constitute
a risk of electric shock to persons.

The exclamation point within an equilateral triangle is
intended to alert the user to the presence of important
operating and maintenance (servicing) instructions in the
literature accompanying the appliance.

WARNING - TO REDUCE RISK

OF FIRE OR ELECTRICAL

SHOCK, DO NOT EXPOSE

THIS EQUIPMENT TO RAIN OR

MOISTURE.

IMPORTANT SAFETY

INSTRUCTIONS!

PLEASE READ THEM BEFORE
OPERATING THIS EQUIPMENT.

1. Read these instructions.

2. Keep these instructions.

3. Heed all warnings.

4. Follow all instructions.

5. Do not use this apparatus near water.

6. Clean only with a dry cloth.

7. Do not block any ventilation openings. Install
in accordance with the manufacturer’s instruc­tions.

8. Do not install near any heat sources such as
radiators, heat registers, stoves, or other appa-

ratus (including ampliers) that produce heat.

9. Do not defeat the safety purpose of the polar­ized or grounding-type plug. A polarized plug
has two blades with one wider than the other.
A grounding type plug has two blades and a

NO USER-SERVICEABLE PARTS

INSIDE. REFER SERVICING TO

QUALIFIED PERSONNEL.

third grounding prong. The wide blade or the
third prong are provided for your safety. If

the provided plug does not t into your outlet,

consult an electrician for replacement of the
obsolete outlet.

10. Protect the power cord from being walked on
or pinched particularly at plugs, convenience
receptacles, and the point where they exit
from the apparatus.

11. Only use attachments/accessories specied by

the manufacturer.

12. Use only with the cart, stand, tripod, bracket,
or table specied by the manu­facturer, or sold with the appa­ratus. When a cart is used, use
caution when moving the cart/
apparatus combination to avoid
injury from tip-over.

13. Unplug this apparatus during lightning storms
or when unused for long periods of time.

14. Refer all servicing to qualied service person­nel. Servicing is required when the apparatus
has been damaged in any way, such as power-

To prevent the risk of electric

shock, do not remove cover or

back. No user-serviceable parts

inside.

supply cord or plug is damaged, liquid has
been spilled or objects have fallen into the
apparatus, the apparatus has been exposed to
rain or moisture, does not operate normally, or
has been dropped.

15. Do not expose this equipment to dripping or

splashing and ensure that no objects lled

with liquids, such as vases, are placed on the
equipment.

16. To completely disconnect this equipment from
the a.c. mains, disconnect the power supply
cord plug from the a.c. receptacle.

17. The mains plug of the power supply cord shall
remain readily operable.

18. Do not expose batteries to excessive heat such

as sunshine, re or the like.

19. Connect mains power supply cord only to a
mains socket outlet with a protective earthing
connection.

2

Thank You

Your decision to own this McIntosh D100 Digital Pre­amplifier ranks you at the very top among discrimi­nating music listeners. You now have “The Best.” The
McIntosh dedication to “Quality,” is assurance that
you will receive many years of musical enjoyment
from this unit.
Please take a short time to read the information in
this manual. We want you to be as familiar as pos­sible with all the features and functions of your new
McIntosh.

Please Take A Moment

The serial number, purchase date and McIntosh Dealer
name are important to you for possible insurance
claim or future service. The spaces below have been
provided for you to record that information:

Serial Number: _______________________________

Purchase Date: _______________________________

Dealer Name: ________________________________

Technical Assistance

If at any time you have questions about your McIntosh
product, contact your McIntosh Dealer who is familiar
with your McIntosh equipment and any other brands
that may be part of your system. If you or your Dealer
wish additional help concerning a suspected problem,
you can receive technical assistance for all McIntosh
products at:

McIntosh Laboratory, Inc.
2 Chambers Street
Binghamton, New York 13903
Phone: [phone]
Fax: [phone]

Customer Service

If it is determined that your McIntosh product is in
need of repair, you can return it to your Dealer. You
can also return it to the McIntosh Laboratory Service
Department. For assistance on factory repair return
procedure, contact the McIntosh Service Department
at:

McIntosh Laboratory, Inc.
2 Chambers Street
Binghamton, New York 13903
Phone: [phone]
Fax: [phone]

Table of Contents

Safety Instructions ..................................................... 2

Thank You and Please Take a Moment ...................... 3

Technical Assistance and Customer Service ............. 3

Table of Contents ....................................................... 3

General Information .................................................. 4

Connector and Cable Information ............................. 4

Introduction ................................................................ 5

Performance Features ................................................ 5

Dimensions ................................................................ 6

Installation ................................................................. 7

Connections:

Rear Panel Connections .............................................. 8

Connecting to a Power Amplifier ............................... 9

Connecting to an Analog Preamplifier

or A/V Control Center ............................................ 10

Connection Diagrams

(Separate Sheet) ................................Mc1A and Mc1B

Remote Control:

Remote Control Push-buttons ....................................11

Front Panel:

Front Panel Displays, Controls, Push-buttons

and Jack ..................................................................... 12

Setup:

Setup ......................................................................... 13

Operation:

How to Operate the D100..................................... 14 -15

Additional Information:

Photos ....................................................................16-17

Specifications ............................................................ 18

Packing Instruction ................................................... 19

Copyright 2012 © by McIntosh Laboratory, Inc.

3

General Information and Connector Information

General Information

1. For additional connection information, refer to the

owner’s manual(s) for any component(s) connected

to the D100 Digital Preamplifier.

2. The Main AC Power going to the D100 and any

other McIntosh Component(s) should not be applied

until all the system components are connected
together. Failure to do so could result in malfunc­tioning of some or all of the system’s normal opera­tions. When the D100 and other McIntosh Com­ponents are in their Standby Power Off Mode, the
Microprocessor’s Circuitry inside each component
is active and communication is occurring between
them.

3. The Fixed Balanced/Unbalanced Outputs and the
variable Balanced/Unbalanced Outputs can be used
simultaneously.

4. The D100 internal Digital to Analog Converter

Circuitry is designed to decode 2-channel PCM

(Pulse Code Modulation) Digital Signal present at

the Coaxial, Optical and USB Digital Inputs. Other
Digital Audio Signal Format Types will cause the
Audio Outputs of the D100 to be muted.

5. The IR Input, with 1/8 inch mini phone jack, is

configured for non-McIntosh IR sensors such as a
Xantech Model HL85BK Kit.

6. When discarding the unit, comply with local rules

or regulations. Batteries should never be
thrown away or incinerated but disposed
of in accordance with the local regulations
concerning battery disposal.

7. For additional information on the D100 and

other McIntosh Products please visit the McIntosh
Web Site at www.mcintoshlabs.com.

Connector and Cable Information

XLR Connectors

Below is the Pin configuration for the XLR Balanced
Output Connectors on the D100. Refer to the diagram
for connections:
PIN 1: Shield/Ground
PIN 2: + Output
PIN 3: - Output

PIN 1

Power Control

The D100 Power Control In receives and the Power
Control Out sends Power On/

Off Signals (+12 volt/0 volt)

when connected to other McIn­tosh Components. An additional
connection is for controlling the
illumination of the Power Output
Meters on McIntosh Power Amplifiers. A 1/8 inch
stereo mini phone plug is used for connection to the
Power Control

Data Input and IR IN Port Connectors

The D100 Data In Port receives
Remote Control Signals from
McIntosh Preamplifiers and
A/V Control Centers. A 1/8
inch stereo mini phone plug is
used for connection.
The IR IN Port also uses a 1/8
inch stereo mini phone plug and al­lows the connection of other brand
IR Receivers to the D100.

PIN 2

PIN 3

Power
Control

Meter
Illumination
Control

Data
Signal

N/C

IR Data
Control

Ground

Data
Ground

N/C

Ground

4

Introduction

The McIntosh D100 Digital Preamplifier is one of the
finest Preamplifiers ever created with connections for
digital sources. The D100 Outputs have the ability to
drive multiple components. The D100 reproduction
is sonically transparent and absolutely accurate. The
McIntosh Sound is “The Sound of the Music Itself.”

Performance Features

• Dual Function

Use the D100 as the Preamplifer together with McIn­tosh Source Components and Power Amplifier to form
a complete Audio System. Connect the D100 to an
exisiting McIntosh Analog Audio System to provide
the latest in Digital-to-Analog Conversion from digital
audio sources.

• Electronic Input Switching

Electronic Input Switching on all Inputs provides reli­able, noiseless, distortion free switching.

• Balanced Outputs

The Balanced Outputs allow the connection of long
cable lengths without a loss in sound quality.

• Precision Tracking Volume Control

Volume levels are controlled by a new Precision Digi­tally Controlled Attenuator System with a tracking
accuracy of 0.1dB.

• Alphanumeric Fluorescent Display

The Front Panel Information Display indicates the
Source Selection, Sampling Frequency, Bit Depth,
Volume Level and Setup Mode Selections. The display
intensity is adjustable.

• Remote Control with External Sensor Input

The Remote Control provides control of the D100
operating functions and allows enjoy of your McIntosh
System from another room in your home by connect­ing an external sensor.

Introduction and Performance Features

• Fiber Optic Solid State Front Panel Illumination

The even Illumination of the Front Panel is accom­plished by the combination of custom designed Fiber
Optic Light Diffusers and extra long life Light Emit-

ting Diodes (LEDs).

• Glass Front Panel

The famous McIntosh Illuminated Glass Front Panel
ensures the pristine beauty of the D100 will be re­tained for many years.

• Digital Audio Inputs

The D100 has Coaxial, Optical and USB Digital In­puts to Decode PCM Signals from an external source.
The Coaxial and Optical Inputs process Digital
Signals up to 192kHz with 24Bit resolution. The USB
Input process Digital Signals up to 192kHz with 32Bit
resolution.

• Quad Balanced Digital to Analog Converter

The 8 channel 32-bit, 192kHz Digital to Analog
Converter is used in a Stereo Quad Balanced Mode,
assuring the music is reproduced with a wide dynamic
range and extremely low distortion, for both Disc and
external sources.

• Power Control Input and Output

A Power Control connection for convenient Turn-On
of McIntosh Power Amplifiers, Source Components
and Accessories is included.

• Special Power Supply

Fully regulated Power Supplies and a special R-Core
Power Transformer ensure stable noise free operation
even though the power line varies.

• Gold Plated Connectors

The Input and Output Connectors Contacts are gold
plated for superior corrosion resistance and high elec­trical conductivity.

5

Dimensions

The following dimensions can assist in determining
the best location for your D100. There is additional
information on the next page pertaining to installing
the D100 into cabinets.

Front View of the D100

1/2"

17-

44.5cm

Dimensions

5 USB 192 24

Rear View of the D100

17-1/32"

43.3cm

3-9/32"

8.3cm

3-7/8"

9.8cm

1-1/6"

2.7cm

29/32

1.8cm

1-5/8"

4.1cm

Side View of the D100

13"

33.0cm

12-1/16"

30.6cm

2-11/32"

6.0cm

2-17/32"

6.4cm

"

9-1/16"

23.0cm

1-3/8"

3.5cm

2-11/32"

6.0cm

13-1/4"

33.7cm

6

Installation

The D100 can be placed upright on a table or shelf,
standing on its four feet. It also can be custom in­stalled in a piece of furniture or cabinet of your
choice. The four feet may be removed from the bottom
of the D100 when it is custom installed as outlined be­low. The four feet together with the mounting screws
should be retained for possible future use if the D100
is removed from the custom installation and used free
standing. The required panel cutout, ventilation cutout
and unit dimensions are shown.

Always provide adequate ventilation for your D100.

Cool operation ensures the longest possible operating
life for any electronic instrument. Do not install the
D100 directly above a heat generating component such
as a high powered amplifier. If all the components are
installed in a single cabinet, a quiet running ventila­tion fan can be a definite asset in maintaining all the
system components at the coolest possible operating
temperature.

A custom cabinet installation should provide the

following minimum spacing dimensions for cool
operation.

Allow at least 2 inches (5.08cm) above the top, 2

inches (5.08cm) below the bottom and 1 inch (2.54cm)

on each side of the Preamplifier, so that airf low is not

obstructed. Allow 15 inches (38.1cm) depth behind the
front panel. Allow 1-7/16 inch (3.66cm) in front of the

mounting panel for knob clearance. Be sure to cut out
a ventilation hole in the mounting shelf according to
the dimensions in the drawing.

D100 Front Panel
Custom Cabinet Cutout

D100 Side View
in Custom Cabinet

D100 Bottom View
in Custom Cabinet

Cabinet
Front
Panel

Support
Shelf

2-19/32"

6.6cm

17-1/8"

43.5cm

5 USB 192 24

Cutout Opening for Custom Mounting

Cutout Opening for Ventilation

13/16"

2.0cm

10-1/2"

26.7cm

Cutout Opening
for Ventilation

11-7/8"

30.2cm

Installation

2-3/4"

7.0cm

Chassis
Spacers

14-17/32"

44.5cm

2-27/32"

7.2cm

Note: Center the cutout Horizontally on the unit.
For purposes of clarity, the above
illustration is not drawn to scale.

6-9/16"

16.7cm

7

Rear Panel Connections

Connect the D100 power
cord to a live AC outlet.
Refer to information on the
back panel of your D100 to
determine the correct volt­age for your unit

DATA IN receives
control data from a
McIntosh Preamplifier
or A/V Control Center

IR INput for
signals from a
compatible IR
Room Sensor

DIGITAL AUDIO INPUTS OPTICAL
INPUTS 2 and 1 for components with
a Digital Audio Optical Output

FIXED AUDIO OUTPUTS UNBALANCED
analog audio output signals to a Preamplifier
or A/V Control Center

VARIABLE AUDIO OUTPUTS UNBALANCED
analog audio output signals to a Power Amplifier

POWER CONTROL IN receives
turn-on signals from a McIntosh
component.
POWER CONTROL OUT sends
turn-on signals on to another McIn­tosh Component.

8

USB DIGITAL AUDIO INPUT
with control signal for connection
to a computer

DIGITAL AUDIO INPUTS COAXIAL
Inputs 2 and 1 for components with a
Digital Audio Coaxial Output

FIXED AUDIO OUTPUTS BALANCED
analog audio output signals to a Preamplifier
or A/V Control Center

VARIABLE AUDIO OUTPUTS BALANCED
analog audio output signals to a Power Amplifier

Connecting to a Power Amplifer

There are two different ways the D100 may be oper­ated in an audio system. The first way as the Main
Audio Preamplifier connected directly to a Power
Amplifier, instructions on this page. The second way
as a Digital to Analog Converter with Input Switching
connecting to an Analog Preamplifier, instructions on
the next page.

The D100 has the ability to automatically switch

power On/Off to Source Components via the Power
Control connections. The Data Port Connections allow
for the remote operation of basic functions using the
D100 Remote Control. With an external sensor con­nected to the D100, remote control operation of the
system is possible from another room and/or when the
D100 is located in a cabinet with the doors closed.

The connection instructions below, together with

the D100 Connection Diagram located on the separate
folded sheet “Mc1A”, is an example of a typical audio
system. Your system may vary from this, however the
actual components would be connected in a similar
manner. For additional information refer to “Connec­tor and Cable Information” on page 4.

Note: The Power Amplifier may be connected to the

D100 Balanced or Unbalanced Outputs.

Power Control Connections:

1. Connect a Control Cable from the D100 POWER
CONTROL OUT Jack to the Power Control In on
the Tuner.

2. Connect a Control Cable from the Tuner Power
Control Out Jack to the SACD/CD Player Power
Control In Jack.

3. Connect a Control Cable from the SACD/CD Play­er Power Control Out Jack to the Power Amplifier
Power Control In Jack.

Connecting to a Power Amplifier

Note: If two Power Amplifiers are used, connect the

Power Control Output of the first Amplifier to
the Power Control Input on the second Ampli­fier.

4. Connect any additional Components in a similar
manner, as outlined in steps 1 thru 3.

Sensor Connection:

5. Optionally, connect the external Sensor to the

D100 IR Input Connector.

Audio Connections:

6. Connect balanced audio cables from the D100

VARIABLE AUDIO OUTPUT (R&L) connec­tors to the balanced Input connectors on the Power
Amplifier.

Note: If two Power Amplifiers are used, connect

the unbalanced VARIABLE AUDIO OUTPUT
(L&R) to the unbalanced Inputs on the second
Amplifier.

Digital Audio Connections:

7. Connect a Digital Coaxial Cable from the D100

DIGITAL AUDIO COAXIAL IN 1 Jack to the
Tuner Digital Coaxial Output Jack.

8. Connect a Digital Optical Cable from the D100

DIGITAL AUDIO OPTICAL IN 1 Jack to the
SACD/CD Player Digital Optical Output Jack.

9. Connect a USB cable with (type A to type B) con-

nectors from the D100 DIGITAL AUDIO INPUT
USB to the Computer USB connector.

AC Power Cords Connections:

10. Connect the D100 and any remaining components’
AC Power Cords to a live AC outlet as illustrated.

9

Connecting to an Analog Preamplifier or
A/V Control Center

The D100 has the ability to automatically switch
Power On/Off with the Analog Preamplifier or A/V
Control Center via the Power Control connection. The
Data Port Connections allow for the remote operation
of basic D100 functions using the Analog Preamplifier
Remote Control.

The connection instructions below, together with
the D100 Connection Diagram located on the separate
folded sheet “Mc1B”, is an example of a typical audio
system. Your system may vary from this, however the
actual components would be connected in a similar
manner. For additional information refer to “Connec­tor and Cable Information” on page 4.

Note: The Analog Preamplifier or A/V Control Center

Power may be connected to the D100 Balanced
or Unbalanced Outputs.

Power Control Connections:

1. Connect a Control Cable from the Analog Pream­plifier or A/V Control Center to the D100 POWER
CONTROL IN Jack.

2. Connect a Control Cable from the D100 POWER
CONTROL OUT Jack to the Tuner Power Control
In Jack.

3. Connect a Control Cable from the Tuner Power
Control Out Jack to the SACD/CD Player Power
Control In Jack.

4. Connect any additional Components in a similar

manner, as outlined in steps 2 and 3.

Data Connection:

5. Connect a Control Cable from the D100 DATA IN

Jack to the Analog Preamplifier or A/V Control
Center DVD or VIDEO Data Port Input.

Connecting to an Analog Preamplifier or A/V Control Center

Sensor Connection:

6. Optionally, connect the external Sensor to the Ana­log Preamplifier or A/V Control Center IR Input
Connector to the external Sensor.

Audio Connections:

7. Connect balanced audio cables from the D100

FIXED AUDIO OUTPUT (R&L) connectors to

the balanced Input connectors on the Analog Pre­amplifier or A/V Control Center DVD or VIDEO
Input.

Digital Audio Connections:

8. Connect a Digital Coaxial Cable from the D100

DIGITAL AUDIO COAXIAL IN 1 Jack to the
Tuner Digital Coaxial Output Jack.

9. Connect a Digital Optical Cable from the D100

DIGITAL AUDIO OPTICAL IN 1 Jack to the
SACD/CD Player Digital Optical Output Jack.

10. Connect a USB cable with (type A to type B) con­nectors from the D100 DIGITAL AUDIO INPUT
USB to the Computer USB connector.

AC Power Cords Connections:

11. Connect the D100, Analog Preamplifier or A/V
Control Center and any remaining components’
AC Power Cords to a live AC outlet as illustrated.

10

Press the area of the push-button to
switch power On or Off to the D100

Remote Control Push-Buttons

Press the LEVEL Push-button to
adjust the Volume Level Up or
Down at the D100 Variable Outputs
Connections

Direct access to the Digital Input (1 - 5)

by using the Front Panel Indicated Input
Number for source selection

Note: Push-buttons whose function is not identified above are for use with other McIntosh Products.

HOME

Steps thru the Digital Inputs

(1 - 5) for source selection

11

Front Panel Displays, Controls, Push-buttons and Jack

INPUT Control allows the
selection of digital sources

(1 - 5) for listening

INFORMATION DISPLAY
indicates the Source, Volume
Level, Sampling Frequency, Bit
Depth, Operational Functions
and Setup Mode Settings

5 USB 192 24

IR Sensor receives
commands from a
Remote Control

LEVEL Control allows
adjustment of the listening
level for both channels

Connection for low
impedance dynamic
headphones, for
private listening

12

MUTE Push-button
with indicator, mutes
the audio from the
Loudspeakers

SETUP Push-button with
indicator, activates the Setup
Mode for changing operational
settings

STANDBY/ON
Push-button with
indicator, switches
the D100 ON or OFF

(Standby) and resets

the microprocessors

How to Operate the Setup Mode

Your McIntosh D100 has been factory configured
allowing for immediate enjoyment of superb audio.
If you wish to make changes to the factory default
settings, a Setup Feature is provided to customize the
operation by using the Front Panel Information Dis­play. Refer to the D100 Front Panel Illustration on the
previous page while performing the following steps.

Note: If the D100 is currently On, proceed to step 2.

1. Press the STANDBY/ON Push-button on the Front

Panel or press the (Power) Push-button on the

Remote Control to switch On the D100. The D100
will go through a brief startup intialization with
the Front Panel Information Display indicating the

Level percentage (Volume) and then the last used

Input Source. Refer to figures 1 and 2.

LEVEL 76%

Figu re 1

1 COAX1 . . . . . .

Figu re 2

2. Press the SETUP Push-button repeatedly until the
Front Panel Information Display indicates “Firm­ware V1.00” or higher. Refer to figure 3.

FIRMWARE V1.00

Figu re 3

3. Press the SETUP Push-button to exit from the
Setup Mode. The LED above the SETUP Push­button will extinguish and the Front Panel Display
will revert back to its normal display. Refer to
figure 2.

Default Settings

The Default Settings Chart that follows indicates the
Function Name, Default Setting and the Page Number
for additional information.

Default Settings

Function Name Setting Page No.

AUTO POWER OFF

BRIGHTNESS

(D isplay)

FIR M WA R E V_ _.__ 13

1

In some Countries and/or Localities the default setting of

Auto Power Off Feature is ENABLED.

1

DISABLED 13

HIGH 13

Auto Power Off

The D100 incorporates an Auto Power Off Feature,
which can automatically place the Digital Preampli­fier into the Power Saving Standby/Off Mode. This
occurs approximately 30 minutes after there has been
an absence of a Digital Audio Signal on the currently
selected D100 Input. If it is desirable to change the
current Auto Off Setting (Disabled or Enabled) per­form the following steps:

1. Press the SETUP Push-button.

2. The Front Panel Display will momentarily indi­cated “Auto Power Off ”. Refer to figure 4.

AUTO POWER OFF

Figu re 4

3. The display will then indicate the current setting,
either Disabled or Enabled. Refer to figures 5

and 6.

DISABLED

Figu re 5

ENABLED

Figu re 6

4. Rotate the LEVEL Control either clockwise or
counterclockwise to change the current setting.

5. Press the SETUP Push-button repeatedly until
the LED above the SETUP Push-button is extin-

Setup

guished and the Front Panel Information Display
indicates the currently selected digital source
Input. Refer to figure 2.

Brightness

The Front Panel Information Display Brightness may
be changed from the default setting. The D100 will
remember the brightness preference, High (default set-

ting) or Low Illumination. Follow the steps below to

reduce the Display Brightness:

1. Repeatedly press the SETUP Push-button until
“BRIGHTNESSS HIGH” is indicated on the
Front Panel Information Display. Refer to figure 7.

BRIGHTNESS HIGH

Figu re 7

2. Rotate the LEVEL Control to change the Bright­ness to the Low Setting. Refer to figure 8.

BRIGHTNESS LOW

Figu re 8

3. Press the SETUP Push-button repeatedly until
the LED above the SETUP Push-button is extin­guished and the Front Panel Information Display
indicates the currently selected digital source
Input. Refer to figure 2.

Firmware Version

The D100 functionality is controlled by internal
software know as “Firmware”. The current Version of
the Firmware can be identified by utilizing the Setup
Mode.

1. Repeatedly press the SETUP Push-button until
“FIRMWARE V_ _.__” is indicated on the
Front Panel Information Display. Refer to figure 3.

3. Press the SETUP Push-button until the LED above
the SETUP Push-button is extinguished.

13

How to Operate the D100

Power On and Off

The Red LED above the STANDBY/ON Push-but­ton lights to indicate the D100 is in Standby mode.
To switch ON the D100, press the STANDBY/ON

Push-button on the Front Panel or the (Power On)

Push-button on the Remote Control. The D100 will
go through a brief startup initialization with the Front
Panel Information Display indicating the Level Per-

centage (Volume) and then the last used Input Source.

Refer to figures 50, 51, 52 and 53. To switch OFF the

LEVEL 76%

Fig u re 51

or press the appropriate push-button on the Remote
Control. Refer to figures 50 and 53.

Level Control

Rotate the Front Panel LEVEL Control (Volume) or

use the LEVEL Upp or Downq Push-buttons on the
Remote Control for the desired listening level. Refer to
figures 50 and 53.

Mute

Press the MUTE Push-button on the D100 Front Panel

HOME

to mute the Audio in all outputs except the HEAD­PHONES Output Jack. Pressing the Mute Push-button
a second time will un-mute the D100.

1 COAX1 . . . . . .

Figure 52

D100 press the STANDBY/ON Push-button on the

Front Panel or the (Power Off) Push-button on the

Remote Control.

Source Selection

Rotate the INPUT Control to select the desired source

Headphones Jack

Connect a pair of dynamic headphones to the Head-

phones Jack with a 1/4” (0.635cm) stereo phone type

plug for private listening. Press MUTE Push-button to
mute the Loudspeakers.

Note: The Headphone Output is optimized for imped-

ances ranging from 20 to 600 ohms.

Figure 53

5 USB 192 24

Figu re 50

14

How to Operate the D100

USB Input Operation with a Computer

The D100 USB Input provides the capability to play­back music from a computer, when the computer is
connected to the rear panel USB connector.

Note: The USB Input is for direct connection to com-

puter only. To playback music from a USB Drive,
connect the USB Drive to another USB Port on
the computer and select the USB Drive with the
Media Playback Program.

The D100 USB Input is compatible with both PC
Computers using Microsoft® Windows® (XP with
Service Pack 3, Vista with Service Pack 1 and Win-

dows 7) and the Apple® Macintosh® Computers

using OS-10.6 with the latest update.

When using a PC Computer with Windows, a spe­cial McIntosh USB Audio Software Driver needs to be
installed on the PC Computer. The driver needs to be
installed before connecting the D100 USB Input to an
USB Port on the computer.

Note: If an Apple Macintosh computer is used with the

D100, no additional driver is required.

The McIntosh USB Audio Windows Driver and
Installation and Operation Guide are available for
download from the McIntosh Web Site:

http://www.mcintoshlabs.com/us/support/Pages/

Manuals.aspx

Under “Product Catorgory” select Preamplifiers
and under “Model Number”
select D100, then click on
“Select”. When the D100
Information appears, down­load the “McIntosh Audio
Windows Driver Installa­tion and Operation Guide”
and “McIntosh USB Audio
Windows Driver V_ . _”.
Follow the instructions in the

USB Audio Windows Driver

Ins ala ion and Operat on Gu de

McI to h Labo ao y I c 2 Chambe s Ste t Bn ham on New Yok 1 903 2699 Ph ne 07- 23 3512 wwwmc nt shabs om

Guide and after the USB Driver is installed, connect
the D100 to the PC Computer.

Note: When computer application programs and vari-

ous computer hardware components conform
to the Microsoft

®

tosh

standards they should also work well when
used in conjunction with the D100 USB Input. If
you are experiencing difficulty with a specific
computer hardware component or computer ap­plication program , c ontact the manufacture r of
the product.

®

Windows® and Apple® Macin-

The D100 Preamplifier Front Panel Information
Display will indicate the Sampling Frequency and
Bit Depth of the incoming digital signal. Refer to
figure 54.

5 USB 192 24

Figu re 54

Reset of Microprocessors

In the unlikely event the controls of the D100 stop
functioning while On or the D100 will not switch On,
the microprocessors can be reset by performing the
following:

1. Simultaneously press and hold in the MUTE
and SETUP Push-buttons until the LED indica­tor above the STANDBY/ON Push-button is
extinguished.

2. To switch the D100 back on, press the On
STANDBY/ON P ush-button.

15

16

Photos

17

Audio Specifications Digital Audio Specifications General Specifications

Frequency Response

+/-0.5dB from 4Hz to 20,000Hz

+0.5/-3dB from 4Hz to 68,000Hz (Source dependent)

Total Harmonic Distortion

0.0015%

Fixed Output level

2.0Vrms Unbalanced

4.0Vrms Balanced

Variable Output level

0 - 8.0Vrms Unbalanced
0- 16.0Vrms Balanced

Signal To Noise Ratio (A-Weighted)

110 d B

Dynamic Range

100d B

Output Impedance

600 ohms Unbalanced and Balanced

Headphone Load Impedance

20 to 600 ohms

Digital Input Format

SPDIF (PCM1)

Digital Input Sample Rate

Coaxial and Optical: Up to 192KHz, 24-Bit
USB: Up to 192KHz, 32-Bit

Digital Inputs

Coaxial 1 and 2: 0.5V p-p/75 ohms

Optical 1 and 2: - 15dbm to -21dbm (TOS Link)

USB: USB Type B Connector

1

PCM (Pulse Code Modulation) Digital Signal type used for

CD Discs, etc.

Power Control

12VDC, 25mA

Power Requirements

Field AC Voltage conversion of the D100 is not pos­sible. The D100 is factory configured for one of the
following AC Voltages:

100 Volts, 50/60Hz at 20 watts
110 Volts, 50/60Hz at 20 watts
120 Volts, 50/60Hz at 20 watts
220 Volts, 50/60Hz at 20 watts
230 Volts, 50/60Hz at 20 watts
240 Volts, 50/60Hz at 20 watts
Standby Power, less than 0.25 watts

Note: Refer to the rear panel of the D100 for the correct

voltage.

Overall Dimensions

Width is 17-1/2 inches (44.45cm)
Height is 3-7/8 inches (9.8cm) including feet
Depth is 16 inches (40.64cm) including the Front

Panel, Knobs and Cables

Weight

13.5 pounds (6.1 kg) net, 28 pounds (12.7 kg) in ship­ping carton

Specifications

18

Shipping Carton Dimensions

Width is 26-1/2 inches (67.3cm)
Height is 11-3/4 inches (29.9cm)
Depth is 24-1/4 inches (62.2cm)

Packing Instructions

In the event it is necessary to repack the equipment for
shipment, the equipment must be packed exactly as
shown below. It is very important that the four plas­tic feet are attached to the bottom of the equipment.
This will ensure the proper equipment location on the
bottom pad. Failure to do this will result in shipping
damage.
Use the original shipping carton and interior parts
only if they are all in good serviceable condition. If

a shipping carton or any of the interior part(s) are

needed, please call or write Customer Service Depart­ment of McIntosh Laboratory. Refer to page 4. Please
see the Part List for the correct part numbers.

Packing Instructions

Quantity Part Number Description
1 033838 Shipping carton only
4 033837 End cap

1 033836 Inside carton only
1 033725 Top pad
1 034301 Bottom pad
1 034547 Bottom filler pad
2 034446 Foam plug

4 017937 Plastic foot
4 400159 #10-32 x 3/4” screw
4 404080 #10 Flat washer

FOAM PLUG

19

McIntosh Laboratory, Inc.

2 Chambers Street
Binghamton, NY 13903
www.mcintoshlabs.com

The continuous improvement of its products is the
policy of McIntosh Laboratory Incorporated who
reserve the right to improve design without notice.
Printed in the U.S.A.

McIntosh Part No. 04138700