Low noise microphone/line/hi-z preamplifier. 2-channel 16-bit/48K H-Z input and 4-channel 16-bit/48KHz output. Stereo headphone output level control knob and gain control knob for input channels +45 dB (max) Windows XP, full support for common sampling frequencies, two-channel recording and playback class with USB charging (no power required) -Compliancy & Mac OS
