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Roland MC-202

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Title: Roland MC-202  
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Subject: Roland SH-101, Innovation in the Dynamics of Acid, Roland TB-303, Roland Corporation, Music sequencer
Collection: Grooveboxes, Roland Synthesizers
Publisher: World Heritage Encyclopedia

Roland MC-202

MC-202 MicroComposer
Roland MC-202
Roland MC-202
Manufacturer Roland
Dates 1983–1985
Price $595
Technical specifications
Polyphony Monophonic
Timbrality Monotimbral
Oscillator 1 VCO
LFO 1 sine
Synthesis type Analog Subtractive
Filter 1 resonant lowpass
Attenuator 1 ADSR
Aftertouch No
Velocity sensitive No
Memory 2 tracks
Effects None
Keyboard }
External control CV/Gate

The Roland MC-202 (MicroComposer) is a monophonic analog synthesizer/sequencer released by Roland in 1983. It is similar to the TB-303 and SH-101 synthesizers, featuring one voltage-controlled oscillator with simultaneous saw and square/pulse-width waveforms. The unit is portable and can be operated from batteries or an external power supply.


  • Synthesizer 1
  • Sequencer 2
  • Computer-based sequencer programming 3
  • Example sounds 4
  • External links 5


The internal synthesizer features one voltage-controlled oscillator with simultaneous saw, square/pulse-width and sub-octave square waveforms. Additionally there is a 24dB Low Pass filter, an LFO and a single ADSR envelope generator.

In terms of circuitry, it is nearly identical to the earlier SH-101 synthesizers but lacks the noise generator, choice of LFO shapes and modualtion/pitch bend controls. However, unlike the SH-101, it does include a delay on the LFO. The two units also share a design aesthetic in terms of the control layout, casing, lettering, knobs and slider caps.


The MC-202 includes a sequencer that can play back two separate sequences simultaneously. Two sets of CV/Gate connectors on the rear of the unit allow for routing the sequences to external synthesizers. One of the two sequences is used to control the internal synthesiser. The sequencer is programmed much like Roland's early digital MC-4 and MC-8 Microcomposer sequencers, whereby notes are entered with pitch, length and gate length. Additionally, each note in the sequence can have an accent and slide, which is similar to the TB-303 and the SH-101 and allows for so called acid sequences.

The sequences are lost if the unit is powered down, however a tape interface is provided so that sequences can be stored to and recalled from an audio tape recorder.

There are DIN sync inputs and outputs which allow the unit to synchronise playback, either as master or slave, with other DIN sync-equipped instruments such as the TB-303 or the Roland TR-808. The unit can also generate and sync to frequency-shift keying signals from a tape recorder.

The MC-303 was built in 1996 and is a digital successor of the MC-202.

Computer-based sequencer programming

In 1997, Defective Records Software released MC-202 Hack, a software application that enables programming of the MC-202's sequencer on computer. It works by creating audio that is routed into the MC-202's cassette input port. It allows for MIDI files to be converted to MC-202 sequences. This eliminates the need to use the MC-202 keys to enter sequence information. Version 2 of the software (released in 2009) also allows sequences programmed directly on the MC-202 to be converted back into MIDI files.

Example sounds

Small looped example using the built-in sequencer, filter and controls; no additional effects.

Problems playing this file? See .
Simple song arrangement using Roland's MC-202 for the filter hookline, SH-101 for the bass and TR-808 for drums; no additional effects.

Problems playing this file? See .

External links

  • The Roland MC-202 Portable Fun With Only 6 C Batteries!
  • Vintage Synth Explorer
  • Roland MC-202 at the Synth Museum
  • another Roland MC-202 1u Midi Rack
  • MC-202 Hack software to convert MIDI files back and forth from/to the MC-202
  • Sound On Sound Magazine Articles - Roland MC202 Microcomposer (Retro) By TOM CARPENTER : August 1995
  • Roland MC-202 MicroComposer Original Data Tape Download : Sep 24, 2010
  • MC-202 Analog User Modifications (D.I.Y. Special: FREE plans to add MIDI capability to the Roland MC-202 with the Synhouse Original MIDIJACK!) : UPDATED for 2010!
  • Electronic Musician Magazine Articles - Roland MC-202 MicroComposer : Oct 13, 2011
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