The A-185-2 is a precision adder (mixer) and buffer for control voltages. Precision means that the amplification of the inputs without attenuators is exactly 1.00. When playing VCOs this means a correct tracking of 1V/oct.
You can also use the A-185-2 as a octave switch because the rocker switches produce a 1V offset voltage when nothing is plugged.
Four CV inputs, three normal CV outputs plus an inverted output
Power consumption: 10 mA at +12 V and 10 mA at -12 V