16-Bit 48KHz 2 mic-In/1 guitar-In, 2-Out USB Recording Interface 22 analog I/O full duplex recording and playback ICON innovative unique mic preamp with individual gain control. +48V phantom power equipped. Built-in ICON 16-DSP effect with control knob on the top panel. 2 DSP parameter adjustment knobs on the top panel. 2 analog outputs on 1/4 TRS jacks or stereo output on 3.5mm phone connector. Built-in stereo RCA input with individual gain control Allow to use as a stand-alone device with RCA input & DSP processing. Attenuator function button equipped for music fade out automatically when mic signal present. Buttons equipped for controlling mic signal (dry/wet) recording to PC. Buttons equipped for controlling monitoring signal (dry/wet). Master volume control on the top panel 2 headphone outputs on 1/4 TRS jacks with individual volume control USB2.0 compatible and USB bus-powered Plug and play and no driver installation is needed. Compatible with Mac OS (Intel-Mac) and Windows XP, Vista (32-bit/64-bit), Windows 7 (32-bit/64-bit) & Windows 8 (32-bit/64-bit) Full duplex, simultaneous record/playback