For sale is a Optimus SSM-1750 4 Channel Stereo Audio Mixer. All inputs are stereo phono left/right with an AUX phone line or mic 1/4″ jack. Channels 1 and/or 2 can select stereo phono or line inputs. Channels 3 and 4 are stereo line inputs only. There are 2 stereo left/right phone outputs. One is an amp output and the other is a line level record output. Output level is monitored via the analog v/u meters. Also onboard is selectable sound effects, cross-fade, cueing, balance, pan, and each channel has a 3-way eq. All of the sliders work well and are not scratchy sounding.