No manual for assembly. Any member have one for loan? I do check ebay for a repop or old one every day. To nube to just use a schematic. I will post in the Eico owner group. I just never post on that forum,so nobody knows me.
Thanks for the info on the HF 65 I have a pair that I am going to have looked over but another site was trying to say only use with Eico amp but as you posted that is the HF 65A not the HF 65 it can mate with any amp (all things considered) Dynaco MK's > Pilot SA 260 like that. Correct me if I am wrong in my take on these older but very clean pr. of mono pre amps.1) It is mono, you know.
2) There were two versions of that preamp: one had an on-board HV power supply; the other took its power from an umbilicus connecting to a socket on an EICO power amp (most of them had the corresponding socket). I don't, offhand, remember which one was designated HF-65.
EDIT: a quick google suggests it was the HF-61 had the p/s built in.
EDIT^2: ... and... a little more thorough check, at Yahoo's EICO group, reveals that the HF-65 is indeed self-powered! It was the HF-65A that had no on-board P/S.