New Tubes- Need Burn-In?


Hey guys- a question.

I just put a new matched quad of Electro Harmonix KT-88EH in my Cayin A-88T Integrated. I properly biased the amp, and after a couple of hours of warm up there is still a touch of "glare" or hardness evident.

I know these brand new tubes need time to burn in...how long a wait is reasonable before I decide whether the EH tubes are the ticket or not? Any tips on what to expect?

Thanks!
danlib1

Showing 1 response by cruz123

Merchans, I am using the Shuguang KT88's in my Cary SLI80 and they are as good as rumored. I got them from Penta Labs, which offers the "GEC clone" version of this tube. In my system this tube was better than either the EH or SED's. I didn't like the EH's at all, but thought the SED's were a good tube. There's a bunch of discussion about the Shuguang tube over at Audio Asylum.