ATM-211_AIRTIGHT

ATM-211

monaural power ampliﬁer

Unprecedented high power 22W derived from broadcast-oriented 211 valve with direct-coupled cathode-follower stage
All-stage triode-driven non-NF Class-A operation to achieve pure,unimpaired sound
Independently coiled transformer for amp-stage, bias, heater & relay circuits to remove mutual interferences
DC-driven heater filament to eliminate hum of output valve
Relay-activated muting circuit for long life of electrolytic capacitor
Bias meter to check operation status of output valve