Yamaha SK-30 w/ Tubbutec Midi SN 3210

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via this Reverb listing

"well preserved SK-30 with Tubbutec midi kit

($800 pro installation + €200 kit courtesy Patchwork Labs Brooklyn)

for more info on all midi functionality of the €200 KAC-62100 kit check the Tubbutec site"

via Tubbutec:

"TM62100 adds MIDI and additional features to SK15, SK20, SK30 and SK50D synthesizers. It is a direct replacement for the Yamaha YM62100 / YM621 key assigner and can also be used to replace defective original ICs – even when midi is not required. The original behaviour is fully maintained.

TM62100 might also work in organs such as Yamaha D85, please read these notes.

Features:

MIDI input and output on several channels with optional soft-through
Independent midi control of upper keyboard, lower keyboard and pedal sections
Full tonal range in split mode
Midi filter cutoff and resonance control
Additional filter LFO
Midi sustain control
Midi portamento control
Midi aftertouch
Note priority for the pedal/BASS section: Lowest/Last/Highest note
Built in configuration menu can set midi channels and other parameters.
Non-destructive installation can be reverted to original"