Monoprice Monolith User Manual
Monolith™ by Monoprice
Desktop Headphone Amplifier and DAC
with THX® AAA Technology (Dual AKM 4493 DACs & Dual AAA-788 Modules)
P/N 24459
User's Manual
CONTENTS
SAFETY WARNINGS AND GUIDELINES ....................................................................................................................................... 3
FEATURES .............................................................................................................................................................................................................. 4
CUSTOMER SERVICE .................................................................................................................................................................................... 5
PACKAGE CONTENTS ................................................................................................................................................................................. 5
PRODUCT OVERVIEW ................................................................................................................................................................................. 6
Front Panel ..................................................................................................................................................................................................... 6
Rear Panel ....................................................................................................................................................................................................... 6
Display ............................................................................................................................................................................................................... 7
CONNECTIONS.................................................................................................................................................................................................. 7
Headphones Output ............................................................................................................................................................................. 7
Pre-Amplifier Output ............................................................................................................................................................................ 8
Analog RCA Input .................................................................................................................................................................................... 9
Digital Coaxial Input .............................................................................................................................................................................. 9
Digital Optical Input ............................................................................................................................................................................ 10
Digital AES/EBU Input ........................................................................................................................................................................ 10
Digital USB Input ..................................................................................................................................................................................... 11
OPERATION ......................................................................................................................................................................................................... 11
Power ................................................................................................................................................................................................................ 11
Source Selection ...................................................................................................................................................................................... 11
Volume Control ....................................................................................................................................................................................... 12
MAIN MENU ...................................................................................................................................................................................................... 12
EQ MENU ............................................................................................................................................................................................................. 13
Shelf EQ .......................................................................................................................................................................................................... 13
PEQ ..................................................................................................................................................................................................................... 14
DRC ........................................................................................................................................................................................................................... 16
2
DIRAC SENSAROUND® ............................................................................................................................................................................. 18
SETTINGS ............................................................................................................................................................................................................. 19
USAGE NOTES ................................................................................................................................................................................................ 20
SPECIFICATIONS ............................................................................................................................................................................................ 21
TECHNICAL SUPPORT .............................................................................................................................................................................. 22
SAFETY WARNINGS AND GUIDELINES
Please read this entire manual before using this device, paying extra attention to these
safety warnings and guidelines. Please keep this manual in a safe place for future reference.
This device is intended for indoor use only.
Do not expose this device to water or moisture of any kind. Do not place drinks or
other containers with moisture on or near the device. If moisture does get in or on
the device, immediately unplug it from the power outlet and allow it to fully dry
before reapplying power.
Do not touch the device, the power cord, or any other connected cables with wet
hands.
Do not subject the product to extreme force, shock, or fluctuations in temperature
or humidity.
Do not expose this device to excessively high temperatures. Do not place it in, on,
or near heat sources, such as a fireplace, stove, radiator, etc. Do not leave it in direct
sunlight.
Do not place or install this device in an area where it can be exposed to excessive
amounts of dust, humidity, oil, smoke, or combustible vapors.
Prior to operation, check the unit and power cord for physical damage. Do not use if
physical damage has occurred.
Before plugging the unit into a power outlet, ensure that the outlet provides the
same type and level of power required by the device.
3
Unplug this device from the power source when not in use.
Take care to prevent damage to the power cord. Do not allow it to become
crimped, pinched, walked on, or become tangled with other cords. Ensure that the
power cord does not present a tripping hazard.
Never unplug the unit by pulling on the power cord. Always grasp the connector
head or adapter body.
Ensure that power is turned off and disconnected before making any electrical
connections.
Clean using a soft, dry cloth only. Do not use chemical cleaners, solvents, or
detergents. For stubborn deposits, moisten the cloth with warm water.
This device has no user serviceable parts. Do not attempt to open, service, or
modify this device.
FEATURES
Dual AK4493 32-bit Digital-to-Analog Converter with support for up to 768kHz PCM
and 22.4MHz DSD (Direct Stream Digital™)
Dual THX® AAA-788 amplifier modules with bipolar class-AB output stages, each
providing 1590mW of power into 16Ω at less than -140dB THD
Dirac Sensaround® provides a natural soundscape where listeners can enjoy their
favorite media in a way that seems to spread instruments, voices, and objects out
into space, enveloping the listener exactly as the artist intended
Six layer printed circuit board for the highest level of analog and digital signal
integrity
Highest quality NDK low noise, low jitter oscillators
Input options include USB, optical, coaxial, and AES/EBU digital audio inputs, as well
as two channels of balanced and unbalanced analog audio inputs
Outputs include unbalanced line level as well as balanced and unbalanced
headphone outputs
4
CUSTOMER SERVICE
The Monoprice Customer Service department is dedicated to ensuring that your ordering,
purchasing, and delivery experience is second to none. If you have any problem with your
order, please give us an opportunity to make it right. You can contact a Monoprice
Customer Service representative through the Live Chat link on our website
www.monoprice.com during normal business hours (Mon-Fri: 5am-7pm PT, Sat-Sun: 9am-
6pm PT) or via email at support@monoprice.com
PACKAGE CONTENTS
Please take an inventory of the package contents to ensure you have all the items listed
below. If anything is missing or damaged, please contact Monoprice Customer Service for a
replacement.
1x Desktop headphone amplifier
1x AC power adapter
1x User's manual
5
PRODUCT OVERVIEW
Front Panel
1. XLR Balanced Headphone Output
2. 1/4" (6.35mm) Unbalanced
Headphone Output
3. Display
Rear Panel
1. DC Power Jack
4. Menu Button
5. Value Knob
6. Enter Button
6. XLR Balanced Right Channel
2. USB Digital Audio Input
3. Optical Digital Audio Input
4. Coaxial Digital Audio Input
5. AES/EBU Digital Audio Input
Analog Audio Input
7. RCA Unbalanced Analog Audio
Input
8. RCA Pre-Amplifier Output
9. XLR Balanced Left Channel Analog
Audio Input
6
Display
The Home Screen of the display shows the volume level in decibels (dB), the
selected input, and any selected options.
CONNECTIONS
Headphones Output
You can connect your headphones to the Desktop Headphone Amplifier using either an
unbalanced 1/4" (6.35mm) TRS plug or a balanced 4-pin XLR connector.
If your headphones use a 3.5mm TRS plug, you will need a 3.5mm-to-1/4" adapter,
such as the Monoprice 7139 adapter (available separately).
You cannot use both the balanced XLR and unbalanced 1/4" TRS headphone outputs
at the same time. When a 1/4" plug is inserted, the XLR output is muted.
When plugging or unplugging a 1/4" connector, completely insert or remove the
connector in one quick, smooth motion. Because of the design of the plug, keeping
the connector plugged in half way can cause a short circuit between the left and
right output channels and may trigger the short circuit protection feature.
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