Very little used Audio Interface 2-channel USB Audio Interface 24-bit/192kHz Low noise M-Audio Crystal amplifier, 2XLR/jack combo inputs MIC/LINE (input 1) 48V Phantom power switchable 2 Instrument inputs 6.3mm jack balanced (input 2) 2 Outputs 6.3mm jack balanced (volume control for output 1+2) Headphone output MIDI I/O USB bus powered Dimensions (WxHxD) 198x71x152