Wow! Plush amplifiers? I remember that brand from my youth and time working in the service dept. at a music store when I was in college. I can't recall the name for the type of upholstery on the cabinets....Kustom "tuck and roll" was similar but quite different. The Plush upholstery was like the seats in the booth at a diner.
Kind of like a Marshall with one input jack feeding a gain stage and another jack coming after that. I drew a schematic, none online, will post tomorrow.
There is so much gain that you can make it sound like a fuzz box.
You could put wheels on those Plush cabinets and enter them in a car show.