This is an mid 1950s Magnatone Starlet series filament amp. These amps are known for their growling overdrive tone and feature a 12ax7 preamp, a 50L6 power tube, and a 35Z5 rectifier. In this video, we'll do a teardown and service, add a 3-prong cord for improved safety and noise reduction, we'll briefly discuss the schematic and finally check out the tone with a Custom Shop Telecaster.