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ALM Busy Circuits MCO Compact Digital Oscillator Eurorack Module

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The ‘MCO’ is a compact digital oscillator with massive sound

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Manufacturer: ALM

Category: Electronic Instruments



The ‘MCO’ is a compact digital oscillator. It features a main ‘morphing’ wavetable output, an additional copy of this output with overlaid variable pulse width segments (ala Alpha Juno style saw wave pwm) and a sub square wave output an octave down to the main output. The waveform and pulse segment width and be both directly and voltage controlled. The pulse segment distribution can also be voltage controlled via the ‘type’ input.

Expect an early 90s slightly crunchy digital type sound (ala Ensoniq, Kawaii KX synths) rather than something striving for perfect analog emulation.




A lot of sound in 6hp.
3 Outputs; wavetable, PWM’d wavetable & sub.
10 morphing waveforms with noise, staple and complex forms
Voltage control of frequency, waveshape, pulse width and distribution.
Hard sync input.
Reverse polarity protection.
Skiff friendly.
Designed and Made in the UK.