This the best quadraphonic signal processor today (Nov 2022). This module will place one voice in the quadraphonic space using various internal patterns that can be sync to an external clock. Automations can be removed to control via CV the location of the signal using either polar (angle-distance) or cartesian coordinates (x-y).

The strength of this module is because it is tightly integrated with an LFO, which guarantees no audio bleed when the audio signal is abruptly moved from one quadraphonic output to another.

Additionally this module has a configurable output to, for instance, output the distance of the signal to the center. This signal can be send to control the reverb on an input signal. The further the signal is from the center, the more reverb is applied to the audio input, increasing the distance illusion on the final quadraphonic output.

This module can also be used to process mono or stereo, making it a kind of dynamic mixer, input 4 different audio signal and using the sum output get the module to create interesting mixes.

This module gives you many of the capabilities of the Buchla 227e, the reference for quadraphonic, but in Eurorack format. A must have module when starting in quadraphonic.

See more quadraphonic modules at https://www.peachymango.org/EuroQuad


This is the only quadraphonic mixer in Eurorack format. You can have an external mixer that outputs in quad, but then the panning will be done in this external mixer and will not be CV controlled. This modules allows you to keep all the quad functions within your Eurorack. It feels to me this is the first building block of a quadraphonic modular synthesizer, but to use it fully, you will need another quadraphonic module like the Aeolus seeds. However with 2 stereo inputs, you can use it with a standard stereo mixer before adding other quadraphonic modules.

With many inputs and outputs close to each others, cable management may be a bit tight, so place this module carefully within your system.

I have 2 of them, so I can have up to 5 quadraphonic voices. This module is really a corner stone of my rack.

Good build, easy to understand, highly recommended.

I have a page listing all the quadraphonic modules on my site.