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I have one of these, it is a "Hi-Fi Master". Performance is good...the metal electrolytic cans used in Japanese sets still tend to be in good condition.
The IF circuitry cheats somehow...I think it uses an inductive coupled circuit with a single choke and capacitor to replace one of the traditional IF tranformers. There is a tiny schematic on the cabinet of mine that shows how it is wired but cannot remember exactly.
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