I picked up an mitsubishi ma-4200 at a garage sale, 5$, seems like an ok amp,but low powered maybe 50wpc.then a few weeks later I won a ma-5200 nr on ebay 28$ shipped Its
transformer is twice as large,me thinks they were part of a set of mitsu stuff,does anyone know specs? FYI they are a little tinny, but ok sound at volume,and are pretty loud.