Harmon Kardon 630 Twin Power Stereo Receiver - 30 Watts Per Channel | Reverb
Vintage HARMAN KARDON HK-630 - Twin Power Receiver. Full Working. Serviced. Clean Photo #1650660 - US Audio Mart
Harman Kardon 630 | Audiokarma Home Audio Stereo Discussion Forums
Latest pickup. Harman Kardon 630 Twin Powered. Paid $125 and it just needed a new fuse for the right channel and a deoxit treatment on the controls. Probably paid too much, but
Harman Kardon - HK 630 - Amplifier - Catawiki
Welcome Secrets of Home Theater and High Fidelity
HARMAN KARDON HK 630 Twin Power Vintage Receiver - LED Lights - YouTube