This unusual and rare amplifier is a 1957 Rickenbacker M-98 "Hi-Fi" amplifier, a small combo amp featuring three 8" speakers and billed as a Hi-Fi because of the Microphone, Phonograph and Instrument inputs! The amp works as its intended, with the original 2-prong plug still on there. We definitey recommend keeping this in a home or studio setting as its a quite old amplifier that's fragile and best used on recordings or small home sessions!