Unknown Ampeg Gemini modificationss

[Queen*Son]

Well I took the amp out anticipating a new tm1 for the tremolo and I wanted to look at some of the mods that were done.. of the 3 1/4" jacks 1 is for...

[Spitfireb]

Well I'm in the process of building my own project amp. I found a old Mono amp on eBay and bought it so I had something to start with.
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