MKS-50 Synthesizer Module - MAME machine

Musical Instrument (Electronic) published 39 years ago:

MKS-50 Synthesizer Module © 1987 Roland.

The Roland MKS-50 Synthesizer Module was a rackmount version of the Alpha Juno series, designed for MIDI-based studio setups and external sequencing environments. Developed by Roland, it used digitally controlled oscillators (DCOs) combined with analog filtering and amplification stages, offering 6-voice polyphony and a subtractive synthesis architecture. The MKS-50 provided the same core sound engine as the Alpha Juno-1 and Alpha Juno-2 keyboards, but in a compact 1U rack format intended for studio integration.

TECHNICAL
single oscillator (saw/pulse/square waveforms with PWM and sub-oscillator)
noise
high-pass
resonant low-pass filters
4-stage envelope
LFO
portamento
chorus
128 presets (64 editable)
guitar mode
MIDI.

TRIVIA
The MKS-50 is essentially the rack version of the Roland Alpha Juno 1 and Juno 2, sharing the same synthesis engine and architecture.

It uses a single DCO per voice with multiple waveform variations, including saw and pulse waves with PWM and sub-oscillator support, giving it a wide bass and lead character.

The filter section includes a resonant 24 dB/octave low-pass filter plus high-pass filtering, contributing to its distinctive mid-80s Roland tone.

It is 6-voice polyphonic and single-timbral, making it more focused on layering or external sequencing rather than multitimbre setups.

The instrument includes a famous “Chord Memory” function, heavily used in early techno and house music for one-finger chord stabs and stabs-based basslines.

Sound editing is limited from the front panel, and deep programming typically requires the PG-300 hardware programmer, which provides full parameter access.

It is strongly associated with late-80s and early-90s techno and house music, especially for its punchy basses and “Hoover”-style textures derived from Alpha Juno programming techniques.

The MKS-50 is often described as sounding slightly brighter and more aggressive than earlier Juno models due to its Alpha Juno engine design.

CONTRIBUTE
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