Gibson’s Maestro Accordion Amplifier was essentially a GA-40 Gibson amplifier but with bass and treble controls as well as a 4×8″ Jensen speaker configuration. This Maestro amp has survived in very nice condition and has all the great smooth creamy breakup and distortion that 50s Gibson amplifiers are known for. The original gold frame Jensen speakers are in great shape as well and sound really strong. The filter capacitors have been replaced as well as the footswitch. We’re confident you’ll love this Maestro GA-45T!