Doepfer A-135-2 Quad VCA/VC Mixer audio-technica Two expression pedal inputs allow

Two expression pedal inputs allow you to bend the pitch of the lead voice and control the volume of the sympathetic strings simultaneously

the control units of VCA2 and VCA4 are out of operation

sampled drum machines

When the output of the comparatur is added to the input signal (a sawtooth in the example) with the correct level relation between both signals one obtains a phase shifted sawtooth

Doepfer A-135-2 Quad VCA/VC Mixer audio-technica Two expression pedal inputs allowA 135 2 is a miniature version of the A 135 1. Behind a front panel with 8 HP only four linear VCAs (voltage controlled amplifiers) and a voltage controlled mixer based on the VCAs are available. Controls, In Outputs and Functions of each VCA: Level (manual control of the VCA amplification), small rubberized knob (L1 L4) Control voltage input with associated attenuator (CV1 CV4), for the full VCA control range about 0+5V control voltage are required