Kenwood KAC-521
Documentation on the Kenwood KAC-521 is thin. What survives comes almost entirely from a single 2012 thread on the UK Vintage Radio Repair and Restoration Forum, where an owner named Diana Johnstone described her longtime amp and asked what it might be worth. No original spec sheets, service manuals, or period advertisements have surfaced in the archive's research.
Here is what the record shows. The KAC-521 is an integrated amplifier rated at 60 watts per channel. Its owner called it "one of the best amps I have ever owned," and a friend she consulted agreed it was a good amplifier. The same thread says it was "not really worth much" - though no concrete market value was ever recorded in the discussion.
That's about all there is. No production years, no dimensions, no frequency response or distortion figures, no circuit details. If you own one, you have a 60W/channel Kenwood integrated amp that at least one long-term owner was fond of. Period coverage of the model appeared in Audio (May 1990, p.98), which included it among amplifiers and equalizers reviewed at the time.
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