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Roland MKS-30

MKS-30 (image courtesy of Roland)

Released: 1984



The MKS-30 (Planet-S) is a rack JX-3P, swapping the sequencer and tape interface for a cartridge slot. Architecture Class: Conventional (subtractive).

Ebay Description:

The Roland Planet-S (MKS-30) is a 2U rack, 6 voice polyphonic hybrid (digital/analog) synthesizer, featuring dual oscillators (saw/pulse/square/noise waveforms with PWM, FM, and sync), high-pass and resonant low-pass filters, ADSR envelope, LFO (triangle, square, random waveforms), chorus, 64 presets (32 editable), chord memory, cartridge slot, and basic MIDI.


Form Factor Dimensions Weight Audio Input Audio Output Communication Port Control Input Control Output Switch Input Power
2U rack W:480mm(19in) D:410mm(16.125in) H:88mm(3.4375in) 6.2kg(13.6875lbs) no stereo MIDI IN/THRU programmer MIDI MIDI sustain 35W AC (IEC C9 to NEMA 1-15P)


Compatibility Multitimbral Memory Program Memory External Storage External Programming UI Input UI Output
- N/A preset:32 user:32 cartridge:64 M-16C cartridge PG-200 buttons LED display


Multitimbral Polyphony Unison Architecture
no 6 no DCO1+DCO2->HPF->VCF->VCA


Effects Pan Modulator Volume Modulator Headphone
chorus no ENV velocity:MIDI-RX yes


Arpeggiator Arpeggiator External Sequencer Sequencer Memory Sequencer External Continuous Program Change
no N/A no N/A N/A pitch-bend mod-lever MIDI-CC1 MIDI


Key Pressure Chord Memory External Control External Sustain Key Scaling Velocity Curves
no yes MIDI pedal MIDI 1 1


Name Signal Class Waveform Octave Range Amplitude Modulator Harmonics Modulator Pitch Modulator Wave Assign Modulator
DCO-1 digital pulse square saw 4-16' no PWM FM ENV LFO pitch-bend MIDI-PitchBend no
DCO-2 digital noise pulse square saw 4-16' no PWM sync ENV LFO pitch-bend MIDI-PitchBend no


Name Signal Class IC Resonant Shape Frequency Modulator Resonance Modulator Shape Modulator
HPF analog opamp no high pass no no no
VCF analog IR3109 yes low pass LFO key ENV no no


Name Level Rate Loop Polarity Trigger Level Modulator Rate Modulator
ENV sustain attack decay release no DCO VCF no no no


Name Waveform Delay Polarity Sync Delay Modulator Level Modulator Rate Modulator
LFO triangle square random yes no no no mod-lever MIDI-CC1 no
Conventional Models
RS-101 RS-202 RS-505 RS-09 SA-09 VP-330 SH-3 SH-5
SH-1000 SH-2000 SH-7 SH-1 SH-2 SH-09 SH-101 MC-202
CMU-810 TB-303 CMU-800 Juno-6 Juno-60 MKS-10 Juno-106 Juno-106s
HS-60 MKS-7 Juno-1 HS-10 Juno-2 HS-80 MKS-50 Jupiter-4
MRS-2 Jupiter-8 Jupiter-6 MKS-80 JX-3P MKS-30 GR-700 JX-8P
JX-10 MKS-70