4MS Atoner Eurorack Synth Module

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via the listing: "How do I begin to describe this rare module?

The Eurorack Atoner is a highly flexible and rather unusual module that can:

Create quantized melodies tuned to an input frequency)
Generate poly-rhythmic clock/trigger outputs)
Pitch shift audio/CV downwards based on harmonic intervals
also act as a general purpose CV mixer with offset.
provide distortion/bit-crusher style effects when fed external audio

Harmonics are extracted from an on-board oscillator or external audio signal and outputed as audio or clock pulses. The Position knob sets the cut-off frequency, under which all frequencies will be stepped downwards along a harmonic sequence (octaves, 5ths, 3rds, etc) all the way to sub-audible clicking sounds. Thus, a scale or clock signal can be generated from a single tone. Two CV inputs and their respective +/- Vary Amount knobs modulate the Position cut-off. The mix of the two CV inputs plus the Position knob is outputted on a CV jack, and another CV output jack provides a steady +10V clock pulse that is jumper-selectable to be a clock division of the audio output (/1, /2, /32, /64, or non-linear division). The Eurorack Atoner consumes 60mA of power and occupies 16 H. P. of space."