Manufacturer Description:The C107 Quad Linear VCA / VC Mixer is a combination of four voltage controlled amplifiers and four mixers.This module is really useful either in big modular synthesizers or small/medium size systems. With four VCAs and four independent mixer outputs, the C107 Quad VCA / VC Mixer brings you a great routing flexibility in a only two units wide module, saving space and money.The C107 Quad Linear VCA / VC Mixer is designed to work with audio and control signals and can be used in many different ways, for example: Four independent VCAs A two channel voltage controlled mixer (with independent outputs per channel) and two VCAs. A two channel voltage controlled mixer (with independent outputs per channel) with a voltage controlled master channel, and one VCA. A three channel voltage controlled mixer (with independent outputs per channel) and one VCA. Two independent two channel voltage controlled mixers (with independent outputs per channel). A three channel voltage controlled mixer (with independent outputs per channel) with a voltage controlled master channel. A four channel voltage controlled mixer (with independent outputs per channel).Each VCA features: A signal input. An initial gain control. A voltage control input with a level potentiometer. An output.The VCAs in the included in this modules are not only attenuators, they can also boost the input signal. Using the initial gain potentiometer and a five volts CV signal, the VCA has a maximum gain of 2 (doubles the signal amplitude). This is very useful for signal processing or to boost external signals.The C107 Quad Linear VCA / VC Mixer is built using high quality electronic components, Switchcraft jacks, Cosmo knobs (the same used by Moog Modular), anodized aluminum front panel.Technical Data Module Format : 5U, MU format ( Synthesizers.com, Moog ) Module Width : 2 MU ( Moog Unit ) Module Depth : 52 mm ( 2,05 inches ) Power : +15V@51mA, -15V@53mA Power connectors : Synthesizers.com , MOTM ( 4 pin ) VCA Maximum Gain : without using CV maximum gain 1, using CV maximum gain 2