- Jan 31, 2012
I was referring to this amp http://www.thevintageknob.org/harman_kardon-hk770.html
if I get them will test with old yamaha speakers before trying on HE-6.
We both misspoke while talking about the same amp!
You called it the HK700, which does not exist. I responded by calling your amp the HK 770, which of course does exist. What a mess. Let's start over.
The HK 870 (later and slightly larger stereo model) and the dual monoblocks HK 775 may be a little better than the HK 770 but they all have similar sound.
These amps normally run fairly warm. If your unit does not, it's likely that the bias has drifted downward which may have helped the amp last this long. The amp would work OK but would not sound its best and should be checked. You should at least replace the electrolytic caps and check the bias circuit and fix poor solder joints. A full restoration should cost no more than $200-$300--you may need a good tech--and would give you an excellent amp for the HE-6 that will last another 15 years.
Yes I got it wrong, it is HK 770...I got it now for 130$. Planning to sell Krell and try others options, I will have a chance to try Rag during possible DC meet next month, it looks very interesting as it can drive all my HP's even IEM. If I like the sound with HE-6, then I will go for it.
Yet to plug and try HK 770, even if I do not like it as much as Krell, it should be good stopgap arrangement.