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Korg M1R




korg m1R
info Country: Japan
Weight: 6 Kg
Dimensions: 430x 405x 88 mm
audio demo trend price : 200€
manual schematic.zip factory patch demo video comments

KORG M1R (1988)
Music Workstation


Rackmount version of the best-seller workstation KORG M1 keeping quite same characteristics.

korg m1
korg m1r

info RACKMOUNT 2 standard rack units. Main panel features a 16 x 40 display, 36 buttons and 1 encoder.

Back panel terminal connectors:
- Midi interface
- main out
- AUX out
- 2 pedal inputs assignable to program change, start-stop, bypass or cutoff

Front panel terminal connectors:
- headphones
- 2 card slots .



edit VOICES cpu NEC-V50 (part of 70216 family) manages 16 voices polyphony based on 16 bit AI System subtractive synthesis; relative DAC is a Burr Brown PCM 54HP.
A basic patch is composed by 1 or 2 PCM (single/double) samples with individual settings:
- pitch detune
- stereo panning
- volume
- delay start.



waves WAVETABLE 4 Mb ROM contains 149 waveforms organized in 3 categories:
- 75 PCM acoustic: acoustic instruments including strings, violins, sax and piano
- 44 PCM drum: percussions and chromatic
- 30 PCM DWGS: pre-calculated mathematically generated waves like additive harmonic, vocal formants and traditional basic waves like sine, saw or pulse.
TECH: DWGS were originally developed on previous model Korg DW-8000.


waves EX UPGRADE and CARDS standard wavetable can be expanded to EX with further 4 Mb PCM, in this case the rackmount became M1EX (EX upgrade is factory native in successive T series).
Even more waveforms can be added using Korg M1 PCM cards or others AI2 compatible Korg systems like Korg M3r or Korg Wavestation.
Here's the list of the official cards, but there are plenty more from third-part :

MSC-01S; MPC-01S Variety
MSC-02S;  MPC-02S Synth 1
MSC-03S;  MPC-03S Drums 1 FOR SALE!
MSC-04S;  MPC-04S Orchestra
MSC-05S;  MPC-05S Piano
MSC-06S;  MPC-06S Fretted Instruments FOR SALE!
MSC-07S; MPC-07S Synth 2
MSC-08S; MPC-08S Percussion
MSC-09S; MPC-09S Organ
MSC-10S; MPC-10S Ethnic 1
MSC-11S; MPC-11S Brass
MSC-12S; MPC-12S Synth 3
MSC-13S; MPC-13S Ethnic 2
MSC-14S; MPC-14S Sound Effects
MSC-15S; MPC-15S Drums 2
MSC-16S; MPC-16S Environment

organ card organ card m1 cards fretted instruments ethnic1 brass card ethnic2 synth1 demo synth2 synth card3 organ card piano card orchestra card sound effects environment card percussion drums 1

performance PERFORMANCE the COMBI mode manages up to 8 parts in the same time with individual parameter settings:
- Midi channel
- volume mix
- transpose
- detune
- zone split
- velocity split
- damper on filter.
- aftertouch assignable to pitch modulation, filter and amplitude
- scales one microtonal user-free slot + 4 ROM presets: equal temp 1-2 and pure major-minor.

korg m1r spec


filter FILTER section is the VDF Variable Digital Filter is a non-resonant lowpass filter with Keytrack function.



adsr ENVELOPE up to 6 EGs:
- VDA amplitude : OSC1 and OSC2 4 segments + 2 times
- VDF filter: OSC1 and OSC2 4 segments + 4 times
- Pitch EG: :OSC1 and OSC2 4 segments + 2 times.


lfo LFO there are 2 delayed and syncable modulators called MG (shapes: triangle, saw up, saw down and square)
- MG1: modulates OSC1-OSC2 pitch
- MG2: modulates filter VDF.


edit SEQUENCER works in both real-time or step notes mode (quantizing up to 1/48 resolution) and manages 8 tracks.
limited CC# implementation but the exclusive systems are complete.

m1 rec


DSP manages double 16-bits sound processors combined in parallel or serial mode.
There are mainly 9 categories effects: reverb, delay, overdrive, equalizer, chorus, leslie, phase shifter, frequency exciter and flanger.



RAM: 100 patches
RAM: 100 combi
RAM: 10 songs + 100 patterns 4400 notes (7700 reducing memory balancing between patch- combi).
Sounds can be saved using special MCR03 card.
Battery replacement: internal battery is a 3V lithium CR-2032 with holder, it is quite common and easy to replace.

internal m1r

family EDIT: there are several editors for M1/M1r :
- Emagic Soundiver (out of business)
- M1LibEd (shareware, old PC) - PIC
- M1 Manager (commercial, PC) - PIC
- Caged m1 (now free, Atari ST)- PIC
- Midiquest (commercial PC/MAC) PIC below

korg m1 editor



family Related M1R models:

related family

M1 61 keys keyboard version

M3R a slimmed m1 / m1 version with similar sound but different structure

korg t series

T series upgraded to EX memory, some versions can also import samples VIDEO

KORG T1 (EX) (88-notes weighted piano keyboard)
KORG T2 (EX) (76-notes keyboard)
KORG T3 (EX) (61-notes keyboard)

Korg M01D

M01D a m1 software for the handheld console from Nintendo. VIDEO

Also Korg IM1 for Apple IOS VIDEO



effet VST PLUGIN / SAMPLED VERSION there are some free and commercial samples set:

  name download demo
free m1r samples FREE "LORE"

Kontakt sampleS

FREE a gift from polynominal.com

Other third-part samples:
- piano samples
-39 drum samples
dexed VST plugin KORG LEGACY collection virtual VST plugin, along with:



demoAUDIO DEMO (no external PCM cards, no effects)

demo favourite : universe lore classic
demo favourite : quite modern !
demo favourite : retro house
demo favourite : performance fx
demo favourite : sinereverb
demo favourite : precint bass
demo piano: pianobar
demo rhodes: plastic ep
demo organ: hammond b3
demo organ: pipe
demo string: pizzicato
demo brass: disco
demo celeste: plum me
demo celeste: magic stuff
demo bass: analog Sh101
demo bass: tb303
demo choir: relax
demo choir: chords
demo choir: another universe
demo choir: performance
demo synth: mystery
demo synth: high lfo
demo synth: delay pitch
demo synth: sequence filter
demo synth: crystal bell
demo synth: suspence
demo synth: whistle
demo synth: panning
demo synth: digital oldies
demo synth: choir DWGS
demo synth: bells and pads
demo synth: 8 bits
demo synth: vangelis
demo synth: syntbassy
demo pad: also modulation
demo pad: clockwork
demo pad: traditional
demo pad: hyper flanger
demo pad: with modulation
demo FX: flanger and delay feedback
demo FX: reverb square
demo percussion: anvil


m1r ATARI Notator with Korg M1R Korg M1 Workstation
demo with ATARI Notator Shadow of the beast M1 mix



Company: Korg
Model: M1r
: Module
Dates: 1988
Price: 150€
Synthesis: PCM rompler
Resolution: 16 bits
Polyphony: 16 voices
Multitimbric: 8 parts
Filter: digital low pass
LFO: 2
Sequencer: 4 tracks

Demo: 42






korg m1r factory reset Just load the factory card MPC00P or EX. There is no ROM recall

OS ROM CHECK To know your M1r version just hold INT while turning on the module. The os is the number after the "#"




m1 logo

original scan
info original brochure

original scan
info original brochure

original scan
info original brochure

original scan
info original brochure


m1 logo





buy m1 memorry cards
-M1 RAM memory cards



korg m1r for sale





m1 logo





isnide M1r main board Korg m1r close up

Dates: 1988
Price: 150€
Synthesis: PCM rompler
Resolution: 16 bits
Polyphony: 16 voices
Multitimbric: 8 parts
Filter: digital low pass
LFO: 2
Sequencer: 4 tracks


REVIEW "Compact M1 version.
Classic digital sounds at bargain price."

manual manual
- Classic - limited filter
- PCM are outdated
- bread'n butter  

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korg m1r 3.5 out of 5 based on 41 ratings. price €150