Controllers & Sequencers

5U Synthesizer Modules

This section contains controllers to generate control signals from MIDI devices such as keyboard controllers, simultaneous two axis control signals from manual joystick control or preset sequences of control voltage or gate signals. Clock signal generation or synchronization of external sequences are possible with several of these devices. 

GMS-742A MIDI/CV Converter

The MIDI to CV Converter module is designed to convert MIDI note commands into corresponding analog voltage level outputs to be used by devices such as voltage controlled oscillators in analog synthesizers.

GMS-952 Dual Joystick Controller

The GMS-952 Dual Joystick Controller contains two X-Y joysticks and gate signal generators in a 2MU panel. 

GMS-775 Sequencer 8

The GMS-775 Sequencer 8 module is an eight step control voltage sequencer in a 1MU panel. The sequencer also generates gate outputs which can be enabled for each step.

GMS-744  Multichannel MIDI/CV Converter

The GMS-744MU Multichannel MIDI to CV converter contains eight complete converter channels, each channel capable of producing an analog output and a gate output.


We produce electronic synthesizer modules in the two most popular formats, MU (Moog compatible 5U) and EU (Eurorack compatible 3U). A wide range of voltage controlled modules including oscillators, amplifiers, mixers, envelope generators, special effects units, wave generators, filters, power systems and cases allow users complete freedom to configure any desired electronic music instrument.


Grove Audio builds microphones, preamplifiers, equalizers, compressors and other professional audio equipment for performance and studio use. We build units in popular formats such as 19 inch rack mount and 500 series 3U modules. We can also produce custom designs on request. Contact us for a consultation.


You can explore all of our products, download spec sheets, and purchase our products in the Grove Audio Synth Store. You can also learn about our periodic specials and new product introductions. Click the button below to go directly to the store.

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Grove Audio has been manufacturing professional recording and modularized electronics for musicians and performers since 1995.