300B series hot cathode in straight power transistor, for A1 amplify. Adapt to the audio amplifier output power requirements for the 100W occasions. There areusers that this section 300BC 300B tube closest to the original.300B-C long-life design, use pure graphite anode, the anode power dissipationup to 60W, appropriate adjustments to the circuit, single-tube amplification for theA1 class, get more than 20W output power.

a, made ​​with high purity graphite anode
b, plate consumption 65W
c, coated with gold gate
d, the spring constant filament
e, Features: fast frequency response
f, voice thick
g, the power can be improved based on the 300B 2W

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