On the input side: 4 XLR inputs with phantom power on/off switches; further switchable between Hi or Lo mic level or to line level. On the output side: 2 XLR outputs (L and R), pair is switchable between mic and line level; and typical 1/4" headphone output. On the front are 4 channel faders with stereo pans, switches for limiters and HPF; master fader, slate mic, 1 khz tone generator, illuminated VU meters. It can operate on AC or 6 AA batteries. Very easy and straightforward to operate. Comes with a protective canvas case and AC power adapter.