Plug in adaptor for old Sontecs EQs or Comps with potted rectangle opamps like HS1000, HS1020 and HS1050.
Allows discrete opamps like JLM99v, HYBRID SMDv2, FLICK SMD, 990, 992, 993 etc to plug in and run on either +/-28v or +/-24v by soldering or unsoldering 4 solder pads.
Unsolder link pads for (+/-28v) for HS3099, JLM99v, FLICK SMD, HYBRID SMDv2, etc
Solder link pads for (+/-24v) for 990, 992, 993