S.P.O. is a polarizing scaler and offset generator.
Up to two inputs can be summed together, and then fed into a single scaler/offset generator. The module could also be used as two separate 2 channel summing mixers.
The offset generator provides a DC voltage source for shifting signals into the positive or negative voltage region.
The scaler provides a means of attenuating and polarizing (inverting) the applied signal. S.P.O. works with audio and control voltages (CV).
Power: 20mA @ +12v / 20mA @ -12v