Cwejman VM-1 Eurorack Voice Synthesizer Module

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"The manufacturer write up is below, but this is essentially a full blown Cwejman synth in one module. The great thing is that you can either bypass the internal VCO, or plug in another sound source to mix with the VCO and use the VCA and Envelope(s) from the VM-1. It's an unbelievable module. I have since gotten some other individual Cwejman modules and do not need this one at this time. You can see it in the bottom right row of the listing photo.

Cwejman makes his modules in extremely small batches and (after some inquiries about other modules) the VM-1 is not on the current list of modules in the pipeline.

The manual is on the cwejman website.

The VM-1 is a complete voice module with an oscillator, multi mode filter, amplifier and 2 envelope generators. The OSCILLATOR can produce seven basic waveforms. The pitch is controlled manually by the 'COARSE' and 'FINE TUNE' controls, and also by the variable CV1 and CV2 inputs. The pitch CV inputs are carefully trimmed for 1 Volt/octave sensitivity.

The pulse width can be controlled by the 'PULSE WIDTH' control and by external signals inserted into variable input "PWM". The SYNC is provided by an external signal to input SYNC.

The 4-pole Multi Mode Filter consists of an audio mixer (MIX), filter and modulation controllers for cutoff, q-peak and output morph. The MIX control mixes two signals; oscillators output and external audio signal (AUDIO). The MMF is a 4-pole multi mode filter.

The low pass, band pass and high pass mode are mixed at filters output by morphing function; knob MODE MORPH and controllable by an external CV signal MORPH and outgoing level is attenuated by a voltage controlled amplifier."