X20PRO User`s Manual

X20PRO User`s Manual
HD D/A converter with DSD
User Manual
Table of contents
Front Panel...................................................................... 2
Rear panel....................................................................... 2
The Screen and the Setting menu............................................. 3
Remote controller............................................................... 5
Product Specification........................................................... 6
Warranty and service........................................................... 7
Drivers installation.............................................................. 8
OS Settings..................................................................... 11
Archive DSD function with foobar2000....................................... 12
Q/A.............................................................................. 16
Front panel
1. Power switch——rotary switch.Clockwise to turn on.Counter clockwise to turn off.
2. The monitor display the input channel encoding format sampling rate volume and others.
3. Multi-function knob can archive all the functions by rotating(CW/CCW) or pressing.
Rear panel
Display and the menu
1. Used large OLED monitor.Display the real-time status and functions
The following figure shows an example
2. Input channel selection:
X20Pro has 6 channels to input.In main menu press the knob to select in
COAX——BNC——AES——USB——IIS——OPT circularly.(With out USB daughter-card will also
display the USB channel.But no signal input)
3. Volume:
In main menu turn the knob to adjust the volume.Clockwise to increase counter clockwise
to decrease from -90dB to 0dB a total of 90 levels adjustment.
4. Enter the menu:
When in the main interface.Hold down the knob for 2s to enter the menu.And press it to enter the
next function.Adjust the functions by rotation.The menu switched by the arrow circularly.
—PCM Digital Filter adjust
—DSD Digital Filter adjust
—Gain adjust
—Master clock mode
—Phase control
—Brightness adjust
5. Menu introduction:
When in the main interface.Hold down the knob for 2s to enter the menu(For two more second to
cancel or after 30s back to the main interface).The following were introduced on each line of the
X20PRO's filter can work in seven modes:M-SHARP —— M-SLOW —— L-SHARP —— L-SLOW ——
HYBRID —— APODIZING —— BRICKWALL switched by the knob
SHARP/SLOW filter divided in two group.One is MINIMUM PHASE start with M-.The other one is
LINEAR PHASE start with M-.SHARP for rapid roll-off digital filtering it is the most common type
sounds most accurate and neutral.LOW slow roll-off.which has a smooth signal attenuation
characteristics of the band.but also because of the band Attenuation characteristics.MINIMUM
PHASE and LINEAR PHASE have the different Impulse response.MINIMUM PHASE without
pre-ringing but long post-ringing.Can be more harmonic overtones.HYBRID Combined with the
characteristics of the two.Sometimes could have the advantages of two.APODIZING is a unique
filter could conceal the Pre-ringing(a type of digital distortion will resulting in some unnatural sharp
or harsh sound).BRICKWALL the filter is sharp roll-off and clean sound.
b.DSD Filter:
X20PRODSD filter with 4 different bandwidth can be selected.Rotate the knob to select in
47K——50K——60K——70K circularly.According to the sampling rate to adjust.47K is recommended
when listen DSD64(2.82M).The larger bandwidth means more treble detail
The high-performance fully balanced analog circuit in DAC-X20 has a 3-level gain adjustment to suit
for different input sensitivity back-end equipment for achieving the optimum signal matching
performance. After entering the corresponding menu item and the gain can be changed in values 0dB,
+6dB, and +12dB.
* If the volume of the back-end equipment can be adjusted, the volume and gain are recommended to be set at 0dB, namely straight
After many years of research and development.X20PRO archive this unique function.In order to set
the ES9028PRO in the best clock environment.True HI-END performance.When select
AUTO.X20PRO will enter the adaptive master clock mode.A more accurate clock will be obtained by a
set of high performance PLLs (phase-locked loop), and it will then be fed to the ES9028PRO DAC.
Because the signal clock and the master clock are not the conventional asynchronous mode, the digital
interpolation filter inside ES9028 will no longer produce a weak timing error (jitter), and the digital
signal will be more accurately recovered. When selecting “Normal” option, the clock mode becomes to
the normal mode, which is the official ES9028PRO asynchronous mode.
*Under the “Auto” mode, the quality of the master clock of DAC-X20Pro will be more or less depended by the quality of the superior
clock. This mode is recommended to be used only for the clock of the front-end audio equipment in good condition.
The amplifier in the RCA output default is positive phase.XLR balanced output for the American
standard polarity output.that is 1,2 hot 3 cold. There are two options for this function: DISABLE
and ENABLE (optional).
There are 8 levels of brightness to adjust(OLED Display)
Remote Controller
Input Button.
Source will be switch to the next after pressing this button by the following cycle sequence: COAX BNC - AES - USB – IIS.
Menu Button.
DAC-X20 main menu is shown by pressing this button.
Four Directions Button.
In DAC-X20 main menu,different item can be explored by UP and DOWN buttons, and different
options in an item can be selected by LEFT and RIGHT buttons.
Return Button.
Return back to the main menu display.
Volume Decrease Button.
It can reduce volume only when DAC-X20 shows the main menu on the screen.
Volume Increase Button.
It can increase volume only when DAC-X20 shows the main menu on the screen.
Mute Button.
DAC-X20 will be muted when this button is pressed, and mute will be released after another
Operating distance of the remoter varies depending on the angle.
If there something blocks the remoter and the sensor, operation might be failed.
If the remoter will not be used for a long time (one month or longer), the battery is recommended to be removed.
If battery liquid leakage happens, battery compartment should be clean immediately and installed a new battery
This remoter might cause the wrong operation of other infrared-red controlled devices.
Product Specifications
Digital Input
COAX input format supported:
PCM 16-24bit/44.1-192kHz; DSD DOP64
BNC input format supported:
PCM 16-24bit/44.1-192kHz; DSD DOP64
AES input format supported:
PCM 16-24bit/44.1-192kHz; DSD DOP64
OPT input format supported:
PCM 16-24bit/44.1-192kHz; DSD DOP64
USB input format supported:
PCM 16-32bit/44.1-384kHz; DSD DOP64-DOP256
DSD native DSD64-DSD256
IIS input format supported:
PCM 16-32bit/44.1-384kHz; DSD DOP64-DOP256
DSD native DSD64-DSD512
*If using USB interface, the supported operating systems includes:WIN XP/WIN7/WIN8/WIN10 32-64bit;Mac
Analog Output
Frequency response:
Channel crosstalk:
RCA output level:
XLR output level:
20-20kHz /-0.08dB
-138dB @ 1kHz
<0.0006% @ 1kHz
<0.0006% @ 1kHz
3Vrms @ GAIN=+0dB
6Vrms @ GAIN=+0dB
Power Supply:
Total Power Consumption:
AC 115V/230V 50/60Hz
W380mm * H65mm * D260mm(Excluding protruding part)
6.5Kg(With packaging)
Thank you very much to buy GUSTARD hi-fi products. To protect your rights, please read the following
warranties carefully, so you can access to the right services from GUSTARD in time.
Product Warranty:
You will enjoy the 2-year free warranty and lifetime maintenance after the date purchasing GUSTARD’s
DAC-X20 product.
You will be given depot renewal service (no scratches on body) within 15 days from the date of purchase.
Also you will get totally free warranty within one month, and the manufacturer is responsible for all
freights. But after one month till to 2 years, the cost of the reparations will be borne by the user and
the manufacturer is only responsible for the freight.
* The manufacturer bears only the freights from Chinese mainland. Part of the freight and tax
generated from overseas will be solved by the user with the dealer negotiation.
Free Warranty Service
GUSTARD DAC-X20 from the purchasing date in the free warranty period, the user uses the product in
normal, and the product fails due to component quality or manufacturing problems.
Beyond the Warranty Service
Belonging to one of the following circumstances, products are no longer provided warranty service.
a. Products from the date of purchase has exceeded a predetermined warranty period.
b. Model, barcodes and purchase date do not match the actual product and warranty card.
c. Without GUSTARD technician permission, unauthorized modifications to the circuit,components
or self-repaired product.
d. Damaging caused by irresistible natural forces.
e. Beyond the permitted use of environmental damage.
f. Damaging due to incorrect use or improper storage. Including but not limited to: the voltage is too
high to burn the circuits or components; Bumping and resulting in damaging the shell or internal;
damaging due to water, oil, liquid and excessive dust; product oxidation or corrosion, etc.
g. Beyond the warranty period, such as an individual component damage, appearance due to human
damage, firmware modifications lead to unable to work by unauthorized users. GUSTARD commits
to take reasonable maintenance fees (except large area components or circuit board burned beyond
repair). Freight and maintenance costs, material costs are required the user to bear.
USB Driver Installation Under Windows
* XMOS USB driver can be found in the CD-ROM accessory. Also one can visit the official
website http://www.gustard.cn for downloading the driver as well.
* Windows 10 users must disable digital signature before installing the driver, or it
might be installed unsuccessful.
1. If connecting this DAC to desktop, you are strongly recommended using the desktop’s
back panel USB interface. Because this USB interface directly connects to the
motherboard, while USB interface of the front panel connects to the motherboard with
a cable, and this cable will have a negative effect to the high-speed digital signal.
2. Connecting DAC-X20 to a computer by a USB cable, and then powering on. The computer
will prompt the discovery of new hardware and attempt to install the driver. If nothing
happens, please try another USB port or re-power DAC-X20.
3. Opening the CD-ROM folder, finding executable file
“XMOS-Stereo-USB-Audio-Class2-Driver-3033_v2.26.0.exe” and running it by double
clicking its icon.
4. Following the prompts, then click next to install.
5. Checking system status. If showing red text prompts “Setup requires that the device
is...”,please restart DAC-X20 or reconnect the USB cable.
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6. If a security warning pops up, you can just ignore it by clicking "Install this driver
software anyway", and then complete the driver installation.
7. Here shows the screen of a successful driver installation. Clicking “Finish” button
to complete the installation。
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◆ Setting DAC-X20(XMOS XS1-U8 MFA) as the default system playback
1. Finding the speaker icon
at the lower right corner of the windows desktop,
right-clicking, and then clicking the menu item "Playback Devices".
2. Selecting "XMOS XS1-U8 FMA (ST)", and clicking on the bottom "Set to the Default
Value", and setting the maximum system volume。
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◆ Setting DAC-X20 as Common Output Playback Device
Configuration in foobar2000
1. Clicking File->Preferences
2. Clicking Playback->Output, selecting“ASIO:XMOS USB Audio 2.0 ST 3033” on the
drop-down menu from “Device”.
Archiving DSD hardware decoding by most common play-back
Setting in foobar2000
1. Opening folder “ASIO Proxy for Foobar2000” ,double clicking “ASIOProxyInstall
-” icon,and clicking “next” for
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finishing installation.
2. Pressing combination keys “Ctrl+P” under the main screen of foorbar2000. Showing
“Playback->Output->ASIO” from the left panel in turn.
3. Double clicking ““foo_dsd_asio”, showing “foo_dsd_asio v0.7.1.2” dialog box.
From “ASIO Driver” drop-down menu, selecting “XMOS USB Audio 2.0 ST 3033”;
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From “DSD Playback Method” drop-down menu, selecting “DoP Marker 0x05/0xFA”. Leaving
all the others unchanged.
4. Clicking
5. Clicking Tools->SACD. From “Output Mode” drop-down menu, selecting “DSD”.
Clicking “OK” for finishing all settings.
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6. Making sure the playback volume of XMOS is the maximum value, otherwise, nothing
can be heard.
Problem and Solution for DSD playback
For using foobar2000 application
1. Why there is no “ASIO” under the path “Playback->Output” in “Preferences” dialog
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The main reason is no ASIO component installation. Opening folder “foobar2000
Components” and dragging file “foo_out_asio.fb2k-component” to the right place in the
“Preferences: Components” dialog box as depicting by the following figure. Clicking
“Apply” button afterwards, and restarting foobar2000. After restarting, you can find
2. Why there is no “SACD” under the branch “Tools” in “Preferences” dialog box?
The main reason is no “SACD” component installation. Opening folder “foobar2000
Components” and dragging file “foo_input_sacd.fb2k-component” to the right place in the
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“Preferences: Components” dialog box as showing in the following figure. Clicking
“Apply” button afterwards, and restarting foobar2000. After restarting, you can find
3. Why there is no sound when playing DSD64/DSD128 music file, but the LCD still displays
“176.4K/352.8K” message?
Because the system volume of XMOS USB AUDIO device is not set to 100%. The DSD
identification code encoded in DoP carriers is destroyed by the system volume control
Finding the speaker icon
at the lower right corner of the windows desktop,
right-clicking, and then clicking the menu item "Playback Device (P)". Double clicking
"XMOS XS1-U8 FMA (ST)", and popping up a “Speaking Properties” dialog box. Setting
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the speaker volume to the maximum level.
4. Why all the above settings are correct, but still getting the error as shown by the
following figure when playing back DSD file?
Because the version conflict between ASIOProxy and SACD decoder component. The correct
version matching shows as following figure, the both IDs should start from “0.7.X” where
“X” stands for any other numbers.
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Some users are using an older version of foobar2000, its SACD decoding component ID is
starts from 0.6.X. If you install ASIOProxyInstall- program, then
foo_dsd_asio version is, and components conflict happens.
To solve the above problem, there are two solutions in totals. The first solution is to
update the SACD component, as the methods described in Question 2.
If you won’t accept re-install everything of foobar2000, the second solution is to
downgrade the corresponding component, such as installing the older version
ASIOProxyInstall-0.6.5.exe. Goggling it, and you will find the right file.
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