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Harman Kardon HK-670 receiver & HK-505 integrated amp

Posted by mjcmt on October 26, 2009 at 09:03:41:
2 weeks ago I bought a used '78 Yamaha CR-620 receiver after reading the good reviews of owners. While I was waiting for delivery of the Yami I came across and purchased a '79 Harman Kardon HK670 receiver and Technics D2 turntable. Long story short the HK-670 outpreformed the CR-620 across the board. As I understand it the 670 was HK's top receiver from '79-'81 and it performs like it. I have read that this receiver, when new outpreformed the Citation series before it. Plus it cleaned up beautifully and has a gorgeous vintage moderm look.

From hearing and seeing this receiver I'm now a believer in quality vintage gear for music!

As it turns out I just swapped the Yami locally for a '79 HK-505 integrated amp from the same model run as the receiver. Now I have the 670 receiver and 505 integrated amp. The 505 has the same transformer, power supply, and amp as the 670 w/ the addition of pre in/power out. The 505 sound better though, than the 670 w/ a clearer, more detailed presentation, not that the 670 was bad at all. The sound of the HK670 receiver was the reason I aquired the HK505 amp. Both amps have been re-aligned so I'm guessing the 505 may have a better preamp, or maybe because the transformer doesn't have to feed the tuner section of the 670. I'm really not sure why.

Now I'm on the hunt for the matching HK-500 tuner. I'm assumig it has the same tuner section, or better, as the 670's which is impressive. I love the look of the HK670 receiver, and like the narrower 17" width of the 505/500 so it will fit on my small Target rack. I haven't had HK since my Citation 11 preamp that I bought new in '71 and gave to my bro in '76. Now I love these vintage Harman Kardon products again.

I'm keeping both the receiver and amp! Hopefully the tuner too.