Add 2

A precision adder and averager in 2 HP. Each of its two sections sums three inputs to one output at exact unity gain, so pitch control voltages add up without the error a mixer's gain controls bring.

Key features

• A rear jumper turns a section into an averager, to combine LFOs or audio sources without raising their level or clipping
• With the bottom section's first input unpatched, the top output feeds the bottom section: five signals into two outputs
• High-end components, as suitable for audio as for control voltages and gates