Excellent condition. All tube, 50 watts. Sounds great with guitar or bass. Kalamazoo Bass 50 Amplifier Specs: 50-Watt all tube amp, original pair of 10" Jensen Special Design C10 speakers 2 EL34/6CA7 power tubes, 2 6EU7 preamp tubes. Made in U.S.A. Produced by Gibson in the 1960s under the ownership ...