The Q108 Voltage Controlled Amplifier is a staple of any synthesizer system. The amplitude of any waveform can be controlled by another signal such as an envelope generator, sequencer, oscillator, etc. An Initial Gain control allows manual adjustment of the amplitude and a Level Control determines the impact of the control signal. Both Linear and Exponential responses are available to simulate a variety of real-world sounds. Positive and negative output signal polarities are provided. Two inputs are provided for mixing.