Tube Audio Lab Western Electric Model 91A (WE91A) 300B Amplifiers

Specs per block: 8-9 watts, single ended directly heated triode, class A

Major components per block: Sophia Electric 300B mesh plate, NOS RCA 5693 pentode driver, 5Z3 DHT rectifier, Jensen Paper-In-Oil signal capacitor, ASC oil filter capacitors, 20W H-20-3.5U Hashimoto output transformer, soft start standby switch

Completed on 12/03/13