Input Selector - Selects the input source (FX / Phono / Line) for each channel. When FX is selected the FX RETURN is routed to that channel and the line fader for that particular channel becomes the level control (wet/dry) for the audio coming back from the effects processor.

PHONO/LINE INPUTS -- Dual RCA inputs for connecting a phono (turntable) or a line level signal (such as CD players, samplers, etc...)