These are plug and play, the are powered from the JAMMA edge so you don’t need an AC adaptor. All six action buttons work by plugging into a standard CPS2 kick harness.
Here’s a video overview of my latest JAMMA SNES:
Here is a pic:
-Powered via the JAMMA loom, no power cord
-Still works with a regular TV
-Fully configurable controls via barrier strips
-Plugs directly into CPS2 kick harness for 6 button support
-Audio amplifier built in to do mono sound through JAMMA harness
-Stereo RCA jacks (unamplified) to connect to a stereo
They run $165 plus shipping in the lower 48, if interested just shoot me a PM.