Harman Kardon hk580i Photo #604480 - US Audio Mart
HK680i and EQ8 ——-Paid $9.99 each! Its usually $4.99 at our local goodwill today, but still i cant complain!! Everything works and sounds awesome. Did not do any cleaning or anything yet.
Harmon Kardon hk 680i 1983 Silver | Reverb Finland
Harmon Kardon hk 680i 1983 Silver | Reverb
Harman Kardon HK-680i Stereo Receiver -Excellent | Stereo Systems & Home Theatre | Windsor Region | Kijiji
Nice Harman Kardon HK 680i receiver — Polk Audio Forum