DOUK AUDIO U2 User manual

U2 / U2 Pro Mini XMOS USB to
Coaxial /Optical Converter
Thank you very much for choosing our products,
please read this manual carefully before using.
How to use
Introduction
Warm tip: 1.3.8 version FOOBAR player is recommended, the
player settings of differnt version players will be a little different.
1. Install the ASIOProxyInstall-0.7.1.2.exe program in the foobar
components file, and follow the prompts to complete.
2. Install the sacd plug-in and ASIO plug-in, as shown below:
(The plug-in is in the foobar components file )
3. Click “Output” on the left side and then select
“ASIO:foo_dsd_asio”
on the right side as the following picture shows:
4. Click “Output” --- “ASIO” on the left side, and then double click
“foo_dsd_asio” just as the following picture shows：
After double click “foo_dsd_asio”, the following menu will appear
and please set as it indicates，(Note: must set as the following
picture if want coaxial and optical to output DSD.)
How to play DSD music
This is a USB to Toslink optical / coaxial / 12S(U2 PRO) audio
converter, a pure digital sound card, support common losselss
playback, suitable for PC computer, notebook, mobile phone,
set-top box, rock 64, raspberry pi and so on, it can provide better
sound quality than their own sound card.
3. After installing the driver, the computer will prompt and display
the device "XMOS XS1-U8 DJ" in the device manager.
②
④③
①
1. Connect U2/U2 PRO to the USB port of the computer with a
USB cable, and the computer USB port can be used for power
supply, for U2 pro version you also can use external DC 5V
power interface.
2. After connecting to the computer, the computer will prompt that
the USB device has been found, and then please install the
driver of this device: XMOS-Stereo-USB-Audio-Class2-Driver-
3004_v4.13.0.exe, please choose different versions of drivers
according to the computer system.

5. Click the left side “tools” -- “SACD”, and then select “DSD” in
ASIO Drive Mode, and then click “Apply” to finish the settings.
1. 32/64 bit Win 7, Win 8 and Win 10 systems need to install driver,
please enter website: https://drive.google.com/drive/folders/1Zj
WBDD5Te-a8O64fCstuOKIwGRo766wD?usp=sharing to
download and install.
2. Native Mac OS 10.6 and above, can use the system's own driver.
And Native Linux with UAC2 compliant kernel also can use
the system's own driver.(Has tested on Ubuntu and Daphile
systems, based on INTEL X86)
3. In general, USB input default supports Android 5.0 system
while Android 4.2 and above need phones with OTG function.
Recommend to use Hiby player to play DSD music. OTG cable
(for Android system) or camera kit (for IOS system) need to
prepare by youself.
System compatibility
Front and back panels
U2
Warm tips
Parameters
Contact information
Address: Room 1329, Wang Cheng Building, Long Guan street,
Long Hua new District, Shenzhen, Guang Dong, China
Contact: LIU CHENXI
Tel: [phone]
Email: [email protected]
Audio input
Audio output
USB chip
Supported
sampling rate
Width bit
Working voltage
Working current
U2
Coaxial/Optical
PCM: 44.1-192KHz
DSD64-DOP
16-24bit
USB
XMOS XU208
DC 5V
130mA
U2 PRO
Coaxial/Optical/ IIS
PCM: 44.1-384KHz
DSD64-128-DOP,
native / DSD256,
native
16-32bit
⑤ ⑥
⑦ ⑧
USB input
Optical outputCoaxial output
U2
PRO
1. Play DSD music need to set the volume of computer/mobile
phone to maximum (100), or else there will be no sound output.
2. For U2 PRO, 12S output supports all sampling rate while
S/PDIF supports 192KHz and DOP DSD64 at highest.
3. For U2 PRO, the pins of 12S is suitable for the HDMI interface
of PS decoders.
4. For U2 PRO, play DSD256 music need to install native driver,
please install from the CD driver or download from the website.