Schematic Notes :
HV power switch also switches filament transformer.
RC filters on amplifier schematic are a ghost copy of the HV supply filters, which are common to both channels
Both 8 and 4 ohm OPT taps are brought to external terminal block.
MJE340s heatsinked to side wall.
V1AA/V2AA are long tail paired vs. not in the original Williamson.
100k grid stoppers form HF filter for loop stability with T7010 OPT.
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