4 channel mixer series img stage line mpx number of channels 4 number of stereo channels 4 equalization 2 band eq mountable connections sd card usb phono input 2 line in 4 inputs 4x lr line rca 2x lr phono rca 3x lr aux in rca 1x mic jack outputs 1 x master lr xlr 1x master lr rca 1x record out lr cinch 1x booth lr jack 635mm headphone jack 4x channel jack 1x master jack fader crossfader display type lcd meter display led