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Harman/Kardon hk670 receiver amplifier (Stereo Review, Apr 1979) | Audio Science Review (ASR) Forum
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Harman Kardon HK670 vintage receiver - SOLD – Holt Hill Audio
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Got my hands on a beautiful piece of equipment the Harman Kardon HK 670 amplifier. : r/audiophile
Harman/Kardon hk670 receiver amplifier (Stereo Review, Apr 1979) | Audio Science Review (ASR) Forum
Used hk twin for Sale | HifiShark.com
Harman-Kardon HK-670 - In Original Packaging | Reverb
Nice Classic Harmann Kardon HK 670 60 watt /ch AM/FM receiver 1979 SERVICED — Polk Audio Forum
