The amp looks to have all original components under the chassis. It does work and sounds very good. The output tubes are GE 6L6’s which biased up just fine.
Item Tag: 500
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🔊Vintage 1950s The Fisher Model 500 Receiver Mono Amplifier Tube ~ Parts/Repair
Up for sale is a rare, mid-century relic of high-fidelity history: theFisher Model 500 Mono Receiver. This unit is an absolute dream project for a dedicated tube audio restoration expert or a valuable donor for rare, original Fisher components.