Kt88 or 6550 tube for McIntosh MC275
A pair of pairs? LOL sounds funny. ME I'm picky.. I'd have to look at the way they auto bias. It's been a while. If I remember, there was a reason I used quads in a 275, I think it was early break up. It's been 30 years ago. I would still pick up quads for that 275. Match the signal valves too, pairs per rail. It uses like 12az7 right? match them in pairs and look at their position. preamp, signal, la-te-da. Put them in, that way.. L vs R (one pair) I remember. To match the valves in my 60s if I wanted to use them and not have an issue, between the two. AND they will. I match left to right. I had a few problems with that. VERY sensitive, Klipsch La Scala, or Jensens speakers per say, show EVERY flaw, from higher floor noise, L/R, distortion, all kinds of crap, behind mismatched valves. Gotta be picky with the old stuff and the new for the BEST SQ. Regards |
Genalex Gold Lion reissue
Yes the GL are very popular,, i tried them, returned them, Prefered the Svet's I just posted a series of answers on this very topic last night. 6550=kt88 My prefered is the Svet 6550. NOS- New Production, exact same tube. KT88=6550 NOS 6550=New 6550 https://forum.audiogon.com/discussions/6550-vs-kt88-vs-kt90 |
I just posted a series of answers on this very topic last night. 6550=kt88 <<<<<<<<<<<<<<<<<>>>>>>>>>>>>>>>>>>>>>>. One was designed in the US one was designed in the EU. They physically look different, as does the KT 90 you reference also. They are not the same, nor do they sound the same. ALL 3 differ in design, and vary from manufacture to boot. 6550 does not = KT88 and certainly not a KT90 valve, different all together again. I read your findings, I had to wash my face with cool water and take a TUMS! Pure bla bla bla... Please! You started a tube flipping business right... and paid 1500.00 for a pair of valves. TUBE FLIPPING. I admire you're stones... Mercy VA, It's stands for Valves Anonymous. Might help. GA, Gamblers Any, AA, NA... Regards |
