4ch Bipolar Mixer BMIX is an active 4 channel mixer with bipolar inputs and complimentary positive and negative outputs. Each input channel has a gain control ranging from -1 to +1, with an open dot indicating a gain of zero. The positive output ( + ) is the sum of all 4 channels, and the negative output ( - ) is the negative of that sum. BMIX is DC coupled, so it's perfect for mixing control voltages or audio. The negative output allows it to act as an inverter and attenuator simultaneously, so a control voltage can be patched, inverted, patched away, and still available. BMIX is a handy companion for modules without enough cv inputs or attenuators, and at 6hp, wont needlessly eat up your rack space. Current Draw: +/- 12mA.