Maybe this would work:

https://www.ebay.com/itm/Rare-Korg-FC6-Foot-Controller-w-5-Pin-Cable-For-Parts-Repair/323286976870?hash=item4b4567c966:g:pIEAAOSwbE9a7Rb3
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Live: Korg PA4X/Bose L1 Pro 8/Senn 935

Studio: Korg PA4X/Kawai MP7SE/Tascam DP24SD/Sony C80/AGK 214/ATEM Mini Pro switcher/