This USB digital interface is independently developed by XING digital audio technology group, and has completely independent intellectual property rights. Support DSD and PCM audio. Lossless output SACD, CD, DXD, DVD Audio. PCM1536K and DSD1024 are supported. It is mainly composed of three chips, USB3300 is responsible for the physical transmission of USB data, STM32F446 (ARM Cortex-M4 180MHz) is responsible for the main control and audio buffer, ALTERA CPLD is responsible for audio signal output. The chips form absolute physical isolation, do not seize resources, do not constitute interference. This is different from single-chip solutions and is an important mark of a high-quality digital interface. This interface uses 2520 small package ultra low phase noise audio crystal oscillator, image noise as low as -158DBC/HZ@100khz. CPLD circuit has been redesigned, specially optimized the clock generation part, so that the advantages of delicate and transparent can give full play to.

The interface also opens up configuration modes for advanced players. MCLK output frequencies can be individually configured for any format. From 64Fs to 512FS, from 2.8224MHZ to 49.152 MHZ, so that the DAC chip play an excellent performance. VID, PID and device strings can also be written arbitrarily to fit any standard USB2.0 audio driver.

The supported formats and sampling rates are as follows: 32-bit PCM (downward compatible 24-bit, 16-bit) formats support 44.1khz, 48KHz, 88.2KHz, 96KHz, 176.4KHz, 192KHz, 352.8khz, 384KHz, 705.6khz, 768KHz, 1411.2khz and 1536KHz sampling rates . DSD format supports DSD64, DSD128, DSD256, DSD512 and DSD1024, and uses DoP (DSD64~512) or Native (DSD64~1024) protocols for lossless transmission.

The manual download link: https://pan.baidu.com/s/1ERGTWKHxlsIf2h4denwi5w.

Supported oss are as follows:

Windows XP, Windows Vista, Windows 7, and Windows 8 require universal third-party USB Audio 2.0 drivers that support all audio formats and sampling rates.

Windows 10 comes with USB Audio 2.0 drivers that support DSD formats for PCM and DoP protocols. All audio formats and sampling rates are supported with a universal third-party USB Audio 2.0 driver installed..

Mac OS comes with USB Audio 2.0 drivers that support DSD formats for PCM and DoP protocols.

IOS7 and later versions come with USB Audio 2.0 drivers that support DSD formats of PCM and DoP protocols.

The USB Audio 2.0 driver comes with Android 5.0 and later and supports all audio formats and sampling rates.

Linux (with the UAC2 kernel driver module mounted), including Volumio, Moode, and Daphile, supports all audio formats and sampling rates.