@zmann007 - you are correct about the XMOS receiver chip, although JLsounds is apparently still involved wrt drivers for Windows. I used to see JLsounds come up when I opened mysonicorbiter but since I now run the USB into a DDC and then use S/PDIF or AES/EBU into my DACs, I don't see that anymore. If important to @debjit_g then I suggest he emails Benjamin with any questions.
This below is from the X owner's manual and seems consistent with other information on the website.
USB Input
Our USB input uses a high-performance XMOS receiver chip, is galvanically isolated, asynchronous, and has ultralow-noise femto clocking. To completely isolate the digital and analog power supplies on the Mystique X our USB input module has it’s own secondary on the power transformer, it’s own Silicon Carbide zero-recovery Schottky diode rectification, and uses two Belleson SPX ultralow-noise ultrahigh-dynamic discrete regulators, one for input and one for output.
Always power up the Mystique X before booting up your music server or streamer. Unlike many DACs, the Mystique X uses no dirty USB buss power. For this reason the Mystique X must be powered on before booting any music server or streamer so that the XMOS USB receiver chip is powered on and can be recognized. Because of the 100% isolation and uncompromising performance of the power supplies and the ultralow-noise femto clocking used in our Mystique X, the USB input module performs better than most USB reclockers and regenerators. According to our customers, most of these “magic” USB boxes will degrade rather than improve performance.
Drivers for the USB input module are included in Apple OS X and Linux. If your server or streamer is Windows based the driver must be downloaded:
http://jlsounds.com/drivers.html
Our USB input module will show up in your player software as “Mystique.” In player software that works with video as well as audio there will be more than one option with the name “Mystique.” Select the option for “Front Speakers.” USB Lift We include a USB Lift on the rear of Mystique X which removes 100% of the parasitic power supply drain from the USB input module and removes all internal clocking noise from inside of the chassis. When facing the rear of the chassis, slide the switch to the right to lift USB. One reason many companies recommend single-ended RCA coaxial AES or balanced XLRAES digital inputs is that they isolate DACs from computer and clocking noise.
