The A-135 is a quad voltage controlled mixer using 4 independent linear VCA’s. The VCA outputs are mixed to a common output, and each input is under voltage control with CV input, attenuator and gain (active pre-amp).
The VCA’s are the same high quality VCA’s as used in the (original) A-130 module - the CEM3381.
Applications include voltage controlled mixing of up to 4 audio signals with separate control voltages (e.g. from LFO’s, ADSR’s, Random, MIDI-to-CV interface or other control voltage sources).
When used with the Morphing-Controller (A-144) the soft fade-over of 4 audio signals with only one control voltage is possible.