Introduction
This device is a USB to Toslink optical / coaxial / IIS (U2 PRO) audio converter, functioning as a pure digital sound card. It supports common lossless playback and is suitable for PC computers, notebooks, mobile phones, set-top boxes, Rock 64, Raspberry Pi, and similar devices. It aims to provide better sound quality compared to the built-in sound cards of these devices.
How to Use
USB Driver Installation
- Step 1: Connect the U2/U2 PRO to the USB port of your computer using a USB cable. The computer's USB port can also supply power. For the U2 Pro version, an external DC 5V power adapter can be used.
- Step 2: Open Computer Management. In the Device Manager, a device named "HIFI DSD" should appear under the appropriate category (e.g., Sound, video and game controllers).
- Step 3: Locate the USB driver file (
XMOS-Stereo-USB-Audio-Class2-Driver-3004_v4.13.0) on the provided U-disk or obtain it from support. Double-click the driver file and click "Next" ▶️. - Step 4: The installer displays a license agreement. Tick the checkbox labeled "I accept the terms of the License Agreement" and click "Next" ▶️ to proceed with the installation of the XMOS USB Audio 2.0 Stereo Driver v4.13.0.
- Step 5: Click "Next" ▶️ to continue. The setup shows that the following software packages will be uninstalled if you proceed.
- Step 6: Click "Install" ▶️ to begin the installation process.
- Step 7: The installation proceeds, showing progress for preparation and uninstallation. Wait for the process to complete.
- Step 8: Once the installation is finished, click "Finish" ▶️ to close the setup wizard. The setup confirms successful installation.
How to Set XMOS as Output on the PC
For Windows 10/11:
- Click the speaker icon in the lower-right corner of the taskbar.
- In the "Select playback device" list, choose "扬声器(XMOS XS1-U8 DJ)" (Speakers (XMOS XS1-U8 DJ)).
For Windows 7:
- Click the speaker icon in the lower-right corner.
- In the context menu, select "Playback devices" (播放设备(P)).
- Right-click on "XMOS XS1-U8 DJ" and select "Set as Default Device" (设置为默认设备(D)) from the submenu.
How to Play DSD Music on Foobar2000 (v1.6.16)
Install Foobar2000:
- Double-click the
foobar2000_v1.6.16.exefile and click "Next" ▶️. - Click "I Agree" to accept the license agreement.
- Choose "Standard installation" and click "Next" ▶️.
- Select the installation location and click "Next" ▶️.
- Choose how to handle existing components (e.g., "Move components to user-components folder (recommended)") and click "Next" ▶️.
- Select the desired components and click "Install" ▶️.
- Wait for the installation process to complete.
- Click "Finish" ▶️ to close the setup wizard. Optionally, check "Run foobar2000" before finishing.
Install ASIO Plug-in:
- In Foobar2000, select "File" ⚙️ > "Preferences" ⚙️ from the menu bar.
- In the Preferences window, select "Components" on the left.
- Click "Install" ▶️ on the lower-right corner.
- Navigate to the U-disk, select
foo_input_sacd.fb2k-componentandfoo_out_asio.fb2k-component, and click "Open" ▶️. - Click "OK" ▶️ to apply changes and restart Foobar2000.
Install ASIOProxy Plug-in:
- Find
ASIOProxyInstall-0.7.1.2.exein the foobar comment file on the U-disk. - Double-click the installer and click "Next" ▶️.
- When the progress bar finishes, click "Close" ▶️.
Playback Settings:
- In Foobar2000, select "File" ⚙️ > "Preferences" ⚙️ > "Playback" > "Output".
- For the "Device" option, select "ASIO: foo_dsd_asio".
- Click "OK" ▶️.
Plug-in Settings:
- In Foobar2000 Preferences, navigate to "Output".
- Under "ASIO drivers", double-click
foo_dsd_asio. - In the configuration menu that appears, select the appropriate options as shown in the screenshot and close the window by clicking the "X" icon.
- ? Note: For DSD256 playback, install the
iBassoAudio_USB-DAC_driver_v3.26.0driver and select "ASIO Native" for DSD Playback Method.
SACD Settings:
- In Foobar2000 Preferences, go to "Tools" ⚙️ > "SACD".
- Set "ASIO drivermode" to "DSD".
- Click "OK" ▶️.
Volume Adjustment:
- Set the system volume to 100%. Click the speaker icon in the lower-right corner, select "XMOS XS1-U8 DJ (ST)", and turn the volume up to 100.
How to Play Music on MAC
- Open the Audirvana application.
- Click on the current audio output device in the upper-left corner of the menu.
- Select the "HIFI DSD" device.
- Set the DSD mode to "DSD over PCM1.1".
- Click the speaker icon in the upper-right corner of the menu and select "HIFI DSD".
Parameters
| Parameter | U2 | U2 PRO |
|---|---|---|
| Audio Input | USB | USB |
| Audio Output | Coaxial/Optical | Coaxial/Optical/IIS |
| USB Chip | XMOS XU208 | XMOS XU208 |
| Coaxial Supported Sampling Rate | PCM:44.1K-192K DSD:DOP DSD64 |
PCM:44.1K-192K DSD:DOP DSD64 |
| Optical Supported Sampling Rate | PCM:44.1K-192K | PCM:44.1K-192K |
| IIS Supported Sampling Rate | None | PCM:44.1K-384K DSD: DOP DSD64-128 |
| Native DSD Support | None | Native DSD 64-256 |
| Width Bit | 16-24 Bit | 16-32 Bit |
| Working Voltage | DC 5V | DC 5V |
| Working current | 130 mA | 130 mA |
? Note: For Native DSD support on Windows 10, install the iBassoAudio_USB-DAC_driver_v3.26.0 driver.
Warm Tips
- To play DSD music, set the computer/mobile phone volume to maximum (100). Otherwise, there may be no sound output.
- If there is no sound when using other software, close Foobar2000. Then, find "XMOS S1-U8 DJ (ST)" in the system's "Audio" settings, right-click it, and select "Set as Default Device".
- For the U2 Pro, if using an external power supply, ensure the voltage is DC 5V. Voltages over 5V can cause damage.
- For the U2 Pro, the IIS pins are compatible with the HDMI interface of PS decoders.
- For the U2 Pro, to play DSD256 music, a native driver must be installed. Install it from the U-disk or download it from the website.
Front and Back Panels
U2:
- Front: USB input.
- Back: Coaxial output, Optical output.
U2 PRO:
- Front: USB IN (with PCM Indicator (Blue) and DSD Indicator (Red)).
- Back: Coaxial output (TOSLINK optical output), IIS output (12S output), DC 5V IN.
System Compatibility
- Windows: 32/64-bit Win7, Win8, Win10, and Win11 systems require driver installation. Download the driver from the provided U-disk or contact support.
- macOS: Native macOS 10.6 and later can use the system's built-in driver.
- Linux: Native Linux systems with a UAC2 compliant kernel can use the system's driver. Tested on Ubuntu and Daphile systems based on INTEL X86.
- Android: USB input generally supports Android 5.0 and above. Android 4.2 and above may require phones with OTG function. It is recommended to use the Hiby player for DSD music. An OTG cable (for Android) or camera kit (for iOS) needs to be prepared by the user.
Contact Information
Address: Room 1329, Wang Cheng Building, Long Guan street, Long Hua new District, Shenzhen, Guang Dong, China
Contact: LIU CHENXI
Tel: +86-18570015672
Email: nobsound@doukaudio.com
