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M²Synth Voice 108 Kit

(£298.80 UK, incl VAT)
200 g
Out of stock
Please allow 4 weeks for dispatch

Under construction

The voltage controlled oscillator is one of the essential core modules in your modular analogue synth. The M²Synth has a few options for VCOs:

  • VCO 101 with sync inputs and sub octave pulse outputs
  • VCO 102 is a quad VCO with preset chord intervals between the VCOs
  • VCO 103 is a mini version of the 101 without the sync and sub octave features
  • Voice 108 has in addition to a VCO, other core functions including a filter, VCA, noise, ADSR etc.


This module, the Voice 108 contains all of the essential elements of an analogue synth in a single 'voice' module. It uses toggle switches for patching with additional jack sockets for integrating into your modular synth.

Voice 108 Functions: VCO, LP VCF, VCA, ADSR, LFO, Noise generator, Mixer & Gate Pulse Generator

Voice 108 Patching:

  • ADSR gate - internal from repeat gate generator or external source
  • VCO frequency modulation from LFO or ADSR
  • VCO PWM modulation from LFO or ADSR
  • VCF cut-off modulation from LFO or ADSR
  • VCF cross modulation from LFO or ADSR
  • VCA level from LFO or ADSR


VCO Features:
  • 1 Volt / Octave CV
  • Coarse and fine VCO frequency controls
  • PWM control
  • CV control of VCO pulse width modulation (PWM)
  • Sub-octave square wave output 1 octave below main frequency
  • Jacks for VCO Sine, Triangle, Saw and Pulse waveform outputs 

VCF Features:

  • 1 Volt / Octave CV
  • CV control of VCF cut-off, cross modulation and resonance
  • Controls for cut-off, resonance and cross modulation

VCA Features:

  • CV control of VCA level
  • Initial level control

LFO Features:

  • LFO waveforms square, saw, triangle & ramp
  • Level and rate controls 

Gate Pulse Generator:

  • Gate rate control

Mixer Features:

  • Six mixer level controls for VCO pulse, sub-octave, saw, triangle, sine + noise
  • Common voice output jack
ADSR Features:
  • Controls for Attack, Decay and Release envelope phases along with the Sustain level
  • Time range selection switch x1 / x10
  • Gate input for full ADSR output
  • Illuminated manual gate button
  • LED indicator of gate pulse
  • ADSR output level control


  • Supply voltage +/-12Vdc  (note: this modules uses two power supply connectors for load sharing)
  • Supply current  J1: +68mA / -68mA, J2: +12/-26mA
  • Panel width: 4U
  • Waveform levels +/-5V
  • Main PCB dimensions 175.26 x 188.51mm
  • VCO frequency range without applied CV 20Hz to 13.6kHz
  • LFO frequency range 0.037Hz to 17Hz
  • Gate frequency range 0.038Hz to 9Hz

Kit contents

Each kit contains

  • Main PCB
  • Jack socket PCB
  • All electronics components, IC sockets and power socket
  • Pair of 100mm long Power leads
  • Potentiometers, knobs, switches and jack sockets
  • Front panel assembly (faceplate and 3mm aluminium back panel)
  • Fixings