AC Operated 7 Tube Audio Amplifier
A 30 watt power amplifier employing four EL84 output tubes in push-pull parallel, and a very high quality output transformer with extensively interleaved windings and grain oriented steel laminations.
Power output: 30W into 8Ω (mono)
Total harmonic distortion: 1%
Speaker load impedance: 4Ω to 16Ω
Valve complement: 4 x EL84, 2 x EZ81, 1 x 7247
schematic - one4b3
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