This is a 1972 Marshall 100 Watt JMP Super Bass Amplifier that has been converted to a Super Lead. It also had been modded by Eddie Van Halen's amp tech, Jose Arrendondo. It has his Arrco Electronics sticker on the back. It also has the ultra rare "moon feet" Marshall only used these for a few years! It has the original point to point wiring bread board and the original transformers as well. The MOD has been removed and it is wired back to stock. This amp is super loud and has tone for days! Truly amazing!