Harman/Kardon 930 Twin Powered from 1972 | unfortunately a knob is missing and some lights still need repair but overall it is in very good condition : r/vintageaudio
Harman Kardon HK 930 - Top model
Problem with my Harman Kardon 930 receiver | diyAudio
Harman+Kardon+HK+930+2+Channel+48+Watt+Receiver for sale online | eBay
Harman Kardon 930 - YouTube
Problem with my Harman Kardon 930 receiver | diyAudio
Harman Kardon HK 930 Receiver - Fully Serviced and Recapped For Sale - Canuck Audio Mart
FS: - Vintage (1972) Harmon Kardon 930 integrated receiver !!!! | The Canadian Guitar Forum