Harman SR-300
Little is documented about the Harman SR-300. No specification sheet, review, or directory listing naming this exact model has turned up. Its power output, price, production years, and even its product type are unconfirmed.
The period record does show Harman-Kardon pushing its all-transistor Stratophonic receiver series hard in the mid-1960s. Ads in HiFI-Stereo (November 1964, p.113) and Audio (March 1965, p.11) touted fully solid-state FM stereo receivers with no vacuum tubes - not even nuvistors. The top model, the SR900, was quoted at $469. A later ad in High Fidelity (May 1966, p.25) showed the SR-400B at $309 with 60 watts output. No source examined confirms whether the SR-300 belonged to this Stratophonic line. It may simply be a model whose paperwork has not survived.
No owner reports, market history, or service information for the SR-300 has been found.
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