i believe it is an organ accordion, and the onboard electronics
are only part of the system which is much more than just
a power supply. Similar to the Iorio, MIDI was added on
as an aftermarket item and wired into the outboard organ component.
Very few had this modification. The electronics look like CRUMAR .
Thanks! So the only way to power and output sounds from the electronics would be to have the CRUMAR amp with the special pin plug? Then it outputs via the 1/4 inch out? The other plug (top) looks like some sort of power input from the inside. Thanks for the help! These electronics and fit look amazing for aftermarket!