Bias 2

Precision scaler and offsetter in 2 HP, to interface signals whose ranges do not match. Two independent sections each have two inputs and two outputs; the second input of each is normalled to a reference voltage, +5 V at the top and −5 V at the bottom, and the outputs combine unity gain with halving at the top and doubling at the bottom. Together they convert between the common Eurorack ranges, −5 to +5 V, 0 to +5 V and 0 to +10 V. Transparent for control voltages, audio and gates alike, it also works as two dual-input unity gain mixers, −6 dB and +6 dB gain stages, or a fixed voltage source with several outputs.