XMOS USB XU208
USB connectivity works through a XMOS XU208 module, a reference particularly appreciated in the world of digital audio.
The latter supports PCM audio streams up to 768kHz and native DSD up to DSD512. This make the DAC-A22 a great choice for playing high-resolution files. In addition, this module supports as well I2S signals to take advantage of this excellent technology for digital audio stream.
This module incorporates two clocks Accusilicon AS318-B, a crystal oscillator model extremely low phase noise (- than 90dBc has 10Hz) typically found in professional recording equipment as well as electronic circuits very advanced audiophiles .