USB audio

Over the past years, our U2S192 USB Digital Audio Interface did benefit from very positive users feedback and an excellent reputation on Audio and DIYers forums. We reviewed your comments and we listened to your requirements to redesign this product. We now take it one step further by improving all key aspects of the base concept.

The brand new XU2S USB Digital Audio Interface is shipping now!

Upgrading your DAC to the highest level with this no-compromise interface will further refine your listening experience!

USB audio playback interface - revisited


The XU2S USB Digital Audio Interface is an easy-to-integrate OEM solution for high-end USB audio playback systems, supporting USB Audio Class 2.0.


USB streaming is based on an asynchronous protocol, clocked by ultra-low jitter on-board oscillators. Using this concept, the design benefits of a local high quality master clock to achieve highest quality, jitter-free digital audio playback. Electronic parts have been carefully selected for the best performances. The oscillators have been developed in collaboration with a Swiss clocking devices manufacturer. All local voltage regulators are very low noise. AES/EBU and S/PDIF transformers are best in class. Full galvanic isolation avoids any interference issues between the audio device and the USB host. Critical components are powered by an external source to ensure optimal performances. The interface can also be configured to work with bus power only, convenient for using the board as a simple USB to S/PDIF mobile interface. Additionally, connections on USB side are protected against short transient electrostatic discharges.

USB to I2S/SPDIF interface

CHF 350.00

  • 0.4 kg
  • Sold Out


  • Based on XMOS xCORE-200 device with an integrated HighSpeed USB 2.0 PHY
  • USB Audio Class 2.0 compliant
  • 2-channel asynchronous endpoint for highest quality digital audio stereo playback
  • Up to 32-bit resolution, sampling rate up to 384 kHz
  • Support for DSD64 and DSD128
  • USB Audio Class 2.0 driver available for Microsoft Windows
  • Full galvanic isolation
  • On-board 22.5792 MHz and 24.576 MHz ultra low phase noise oscillators
  • Master clock output for DAC synchronization
  • I2S/DSD output at CMOS level
  • S/PDIF and AES/EBU digital audio outputs, buffered and transformer-coupled
  • Designed and assembled in Switzerland


XU2S USB Digital Audio Interface OEM/evaluation board datasheet
This datasheet provides information needed to design and integrate the USB Digital Audio Interface into third-party products.
Adobe Acrobat Document 2.3 MB


Stereo USB Audio Class 2.0 driver for MS Windows
Version 4.13.0 of the MS Windows Audio Class 2.0 driver for engineered XU2S Digital Audio Interface.
Compressed Archive in ZIP Format 2.1 MB


XU2S firmware
Version 7.01 of the XU2S Digital Audio Interface firmware for update with the DFU loader.
engineered XU208 firmware 7v01rc1
Compressed Archive in ZIP Format 24.6 KB

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