Connect your computer USB port to this device. SPDIF out connects via 75 ohm BNC/RCA or TOSLINK to your DAC. Then stream bit perfect music asynchronously using supplied ASIO drivers, bypassing the Windows playback system.
This uses the Musiland 24bit/193khz module core functions, however fitted in its own chassis and extensively reworked with these enhancements to the power supply and digital signal path:

•  2 new low distortion pulse transformers fully capable of 24/192
• 75 ohm teflon cabling
• 75 ohm Canare BNC
• 75 ohm Canare RCA
• independant regulated/filtered linear power supply module - USB power is disabled
• circuit reconfigured: output level increased to industry standard for reliable signal lock
• signal critical capacitors changed to higher quality OSCONS
• Ultimate clock with 0.5ppm TCXO and low noise power supply for lowest jitter

read the thread here

Download User Manual here:
http://www.diyhifisupply.com/node/917

Chassis:
Projekt X Chassis 70 x 300 x 320mm

 *Not include USB cable and power cord