Model 361 Dual Mixolator

Borg Filters


The "Super VCA" developed for the Wiard, the Mixolator, is a switchable two or four quadrant multiplier. Four quadrant multiplication is also call "balanced modulation" or "ring modulation".

This module contains two identical units.

It begins with a high quality DC coupled dual input VCA with individual volume controls (labeled X1 and X2). A "Y" input and output are included so that any combination of mixing, panning, crossfading, gain control, phase inversion and ring modulation are possible.

The voltage control curve of each VCA is smoothly pan-able from linear to logarithmic response.

The output of the each VCA is displayed on a four LED VU meter.

Please be aware that because of the nature of Grant's original experimental circuit (which relies on phase cancellation to create the functionality), the VCAs do not completely shut off, and there is some crosstalk. The circuit is susceptible to temperature changes.


• Two Multi-function circuits that provide VCA, crossfade, segue, and balanced modulator functions
• A jack multiple
Bantam (TT) or 3.5mm jacks


Large Front Panel Image
Original User Manual