$55 · FOSI DAC-Q4

I am selling a FOSI DAC-Q4 audio DAC. Info direct from the FOSI site: * Easy to set up, no special software, app, or driver to install, a true plug-and-play digital audio adapter. 

 * With USB, optical and coaxial S/PDIF inputs can fit with most home audio systems, and RCA output can be connected to an amplifier or powered speakers on your desktop; 
 Built-in Hi-Fi headphone amp chip can drive most 16ohm to 200ohm headphones. 

 * 160mW RMS(32 ohms, 20 Hz - 20 kHz, 0.01% THD), with bass and treble control, can be used as preamp or volume controller for your PC/MAC/Computer. 

 * Mini Compact D/A converter, stream bit-perfect 24bit/192KHz HD with low jitter, with output, protect the circuit, safe for your expensive audio system. 
 Thanks for looking.