P6-KBD: Korg Polysix MIDI Interface

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If you want to order the device:



P6-KBD MIDI retrofit enables Korg Polysix to be controlled via MIDI. You can remotely control the keyboard and speed of the arpeggiator by MIDI commands. The instrument works like polyphonic MIDI sound expander.

The interface works in one direction only - it only receives MIDI data. The Polysix's keyboard, control panel sliders and switches are not transmitted as a MIDI data! The interface controls instrument's keyboard in parallel manner - own instrument's keyboard can also be used together with the MIDI Notes (see picture below). No other control elements (switches, sliders, etc.) or sound parameters of the instrument are driven via MIDI and their status cannot be saved in the interface as a patch.


At every instrument start-up, MIDI channel Nr. 11 is set. During operation, MIDI channel number can be changed by SysEx message only. So if other default MIDI channel number is necessary, specify it in order please.

Block diagram:


  • The instrument's keyboard is controlled manually and by MIDI Note On/Off commands simultaneously.
  • The keyboard can be transposed in whole range of MIDI notes 0~127.
  • Four modes of key priority can be chosen: Last / Higher / Lower / None.
  • The instrument's tone generators can be detuned (in semitone steps) by MIDI Pitch Bend command. The bend range is from 0 to ±24 semitones.
  • Any receiving MIDI channel or OMNI mode can be selected via SysEx message.
  • Arpeggiator can be synchronized with internal instrument's tempo generator or with external MIDI clock.
  • All original features of the instrument are not changed and it can be used the same way as before the interface installation.
  • Installation of interface into the instrument is very easy.
  • The product is covered by thirty months warranty - more info

Parameters adjustable by user:

  • MIDI Channel (1 to 16 / OMNI)
  • Key Shift (+0 to +67 semitones)
  • Key Priority (Last / Higher / Lower / None)
  • Pitch Bend (Wheel) Range (from +-0 to +-24 semitones)
  • Arpg Clock Rate (internal or 1~128 MIDI ticks)

MIDI implementation - reception only:

  • Note On / Off (0~127)
  • CC 16 - Key Shift parameter setting (0~127)
  • CC 17 - Key Priority parameter setting (0~127)
  • CC 18 - Pitch Wheel Range parameter setting (0~127)
  • CC 19 - Arpg Clock Rate parameter setting (0~127)
  • CC 64 - Hold
  • CC 120 - ASO
  • CC 121 - RAC
  • CC 123 - ANO
  • Pitch Wheel (0~16383)
  • System Clock
  • System Exclusive - setting of all parameters and selection of MIDI channel (1~16 / OMNI)



Installation of all MIDI interface's parts into the instrument is very easy. No problem should occur if all instructions indicated in installation manual are kept.


P6-KBD MIDI kit package contains:

  1. MIDI Interface board
  2. MIDI socket with cable
  3. Coupling elements (screws, nuts, washers and heatshring tubes)
  4. Owner's and Installation manuals in printed form

Installed interface:



Document / SW Download Description
Installation Manual (Rev. 2) PDF document
Owner's Manual (Rev. 2) PDF document
MIDI System Exclusive Communication (Rev. 2) PDF document
SysEx Messages Generator (SW) ZIP archive with Java script based software for the device programming
Recommended MIDI Software Link to recommended MIDI software for SysEx Messages Generator




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Last update: 13.10.2019, Copyright © 1996-2019 CHD Elektroservis