This is an extraordinary sounding headphone DAC, preamp and amplifier all in one very small unit (1.8 ounces). It is excellent shape and I purchased it new on 1/31/2016. The two year warranty is transferable! I used with my Oppo PM3 and MRSpeaker Ether headphones and it worked perfectly. Comes with 6" USB A to mini cable.
True MQA decoding
Apodising filter, 4x upsampling to 176.4/192kHz, Noise
Asynchronous, USB powered
plugs into any computer with a USB port
elegant and rugged metal enclosure
connection to avoid motherboard stress Extruded Aluminium shell with moulded
plastic endcaps and rubber foot.
line out, fixed 2v RMS output
headphone jack with variable-level output, impedance 0.47 ohm