MS-20 (Copy)

£200.00 to £310.00 ex VAT
£240.00 to £372.00 inc VAT


Korg MS-20 (only for original version produced 1978-1983)

Although the recent MS-20 mini is said to be electronically identical to the original, the layout is almost certainly not, so this kit is not suitable for the recent mini version and anyway MIDI is already fitted.

PLEASE NOTE: Installing a retrofit kit is a skilled job which should be undertaken only by a competent synth service engineer or installed by us at our premises in Tadworth, just outside London.

Note also that retrofit kits are always built to order after your payment has been processed. It then takes us up to 10 working days to build and test the kit before we can despatch it.


This retrofit adds the following MIDI control to the MS-20:

This kit is to receive MIDI only, no MIDI can be sent from this keyboard.

For incoming MIDI:
Any MIDI channel can be selected
Notes (MIDI note numbers 36 – 96) – transpose possible
Pitchbend – (2 semitones, a fifth and an octave selectable)
Mod Wheel (CC#1) (controls the MS-20’s own LFO by default but can be set to control retrofit’s own MIDI syncable LFO
Filter cutoff frequency (of low pass filter) (default is CC#16 but can be any CC or velocity)
Sustain pedal (CC#64) sustains notes
Portamento (CC#65) controls glide (portamento) built into retrofit
Setup is stored in non-volatile memory (EEPROM)

Added hardware:
MIDI In, & Thru sockets
Push button (for programming the MIDI setup)

The kit comprises the following items:
MIDI Circuit board – fits inside the CS-10
Small pack – contains DIN sockets and mounting hardware
Large pack – contains cable assemblies
User instructions – How to change from default settings and general instructions
Fitting instructions – step by step fitting guide plus diagrams of where to connect what

All kits are fully checked and tested before despatch

Note: Our retrofit kits are not intended for installation by the end user. They should always be fitted by an experienced synth engineer.