Full Details on Amazon.com : http://www.amazon.com/gp/product/B0046B9O9W?tag=tsukuyomi-20
Diamond External Xtreme Sound 7.1-Channel USB Audio Device
Dramatically improve your PCLaptop audio quality
Dolby digital audio streaming via SPDIF out
Volume controlled through your computer or manually on adapter
USB spec 20 full speed compliant
71 channel DAC output with 16 bit resolution 31 Vpp 11 Vrms biased at 225V output swing control and mute function
