The Yamaha G100B-212 is a powerful vintage solid-state guitar combo from the mid-1970s, rated at 100 watts RMS and equipped with two 12-inch speakers. Featuring dual channels, onboard Accutronics reverb and variable distortion, it delivers plenty of power and classic Yamaha character in a substantial, road-ready package. This one has been modified with fluffy blue fabric covering the amp’s grill, which has been placed over the original grill.