Tube rolling in Cayin A-88T

Bartockfan,

Spam? Reconsider your musings about Tyler speakers and the Cayin Amps. Frankly, that IMHO, is SPAM. You have no first hand knowledge of either yet you ponder on, an on, and on to the benefit of no one except yourself by seeing your thoughts in print!

Sorry, but I'll spare you the dubvious benefit of advise or comments in the future. :-(

My stock power tubes are EH6550. I have been using GEC KT88, much better sonically. You should replace the stock input tubes, which will result in big improvement. Syl 6sn7w will shine from top to bottom. And RCA 5891 is a good match. The final result is the brilliant sonic house blowing up lots of much more expensive amps. I will be trying the GEC copy version of the Chinese KT88 very soon.

A Tripath TEAC sounds very good with my 96 db speakers, better than the Cayin so far...

I changed to the 8 ohm terminals, and the sound improved a lot, still a bit bright with some recordings, but acceptable now...

I guess some more playing will make it fine...

But I am worried with a THUMP on the left speaker when I switch off, only sometimes, and loud HUMMM, also from the left speaker, and also only a few times, when I turn it on, it stops after a while...

Thanks for your help...

I switched the pre-amp tubes, left with right, to check if it was a bad tube, so far no more THUMPs or HUMMM, knock on wood...