Features: Supported input of sound source. Pure digital USB signal input Analog Audio signal line in S/N Ratio : 93dB & up 24 bit / 96K Hz Stereo A/D converter -Audio Line In: 1. Regular Sound source from computer USB Digital signal 2. Audio amplifier line in priority first when you plug a mp3 or mobile sound source into line in port -Output Power: 2 x 10W (full 8 Ohm) 2 x 12.5W (full 6 Ohm) 2 x 16W (full 4 Ohm) ClassD-I