300B se mono block tube amp

Pair of stromberg carlson ap-80 mono block 6550 tubes power amplifier now it is time to let them find other fine home. These mono amplifiers were designed with two set of power transformers, one for B+ high voltages, another one for all filaments so that the filament can left power on all times while the B+ high voltages can be turn off if it did not need during standby condition.