Mixer

Maker	EchelonForce
Type	Four input mixer using a single op amp
Mounting	Mixed
Width	—
License	Proprietary (CC BY-NC-SA 4.0, noncommercial so not an open licence)
Difficulty	🌶️ Large through-hole

About as simple as a mixer gets: one op amp doing the summing. Passives are 1206 SMD on hand solder pads with through hole DIP sockets for the ICs, and no gerbers are committed.

Documentation

• Assembly instructions
• Schematic

Links

• Source / files on GitHub
• Maker page

More from EchelonForce

Analog Switch Analog switch that routes a signal in the audio path Envelope Generator AS3310 ADSR envelope generator on the AS3310 Level Display Signal level display module LFO Stomp LFO built around the Electric Druid STOMPLFO chip MIDI to 16x16 CV Gate MIDI interface with 16 CV and 16 gate outputs Noise Generator Noise source built around the Electric Druid Noise2 chip Polyphonic Envelope Four channel polyphonic envelope generator using four AS3310s Triple Attenuverter Three channel attenuverter with offset

More mixer modules

Frames Mutable Instruments Mak Mak Voxmachina STMix Befaco Morphader Befaco STMix 1U Befaco EDU Mixer Erica Synths DIY Mixer Erica Synths Battle Ginko Synthese

This is a third-party open-source design, listed here as a build reference. Specs are researched from public sources; check the source repo and store for the current BOM, panel, and revision before ordering parts. Corrections welcome.

← Back to all builds Resources Suggest a correction or a missing module