Acidlab - M303

The M303 is an entire synthesizer voice and to be exact a clone of the TB-303´s analog circuitry in a single Eurorack module. Imagine it as a modular vesion of the Acidlab Bassline without the sequencer but with aditional CV inputs instead.

Oscillator: Waveform is selectable between square and sawtooth. Tuning  control for setting the frequency. 1V/octave CV input for controlling the frequency. VCO-CV with attenuator (VCO Mod control). Input for de-/activating the silde function. Oscillator output.

Filter:303 low pass filter with controls for cutoff and resonance. The cutoff can be modulated with the VCF-CV input with the VCF-Mod control as attenuator.. Besides that the filter features a env-mod control for setting the envelope´s cutoff modulation depth. An audio input allows for filtering external audio material.

Envelope: manually controlled Decay-Envelope with gate input and envelope output.

VCA: internally modulated by the envelope, but alternatively it can work in gate mode. Separate VCA audio input. The accent input allows for setting accents with a CV/trigger.

The level of the audio signal at the OUT socket can be adjusted with the volume control.