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KT-88 in Conrad Johnson Premier 11a

I read some discussion about replacing 6550 in Conrad Johnson Premier 11a by KT88 may/will tighten bass and improve overall midrange and treble performance.

I talked with CJ and they said they never tried KT-88 in 11a (well I really doubt it) and it may not be able to bias KT-88 in it at all.

I really would love to try KT-88 in my 11a but I need to make sure I can bias it correctly... Any one got experience in it?

Thanks
Andy
hklai

Showing 2 responses by hklai

hklai OP
14 posts
 
Thanks everyone! I read some discussion saying KT88 needs to be biased differently on some amps as it works best in a slightly different current flow.

Anyway I am really tempted to try KT88... Artmaltman, which brands of KT88 did you try on your 11a and how would you compare them?

I wish I can try GEC if I had the money. =p I am choosing from Svetlana, Electro-Harmonic, or SED. I found on some tubes store websites that SED is re-branded Svetlana... but SED costs more. Anyone knows the story behind this?

Thanks!
Andy
hklai OP
14 posts
 
Thanks Jay and Art!!

I'm really curious to know how the NOS Genalex KT88 sounds... and wonder if they can really live up to their price.

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=5766639003&rd=1&sspagename=STRK%3AMEWA%3AIT&rd=1

Art, did you happen to try Electro-Harmonix as well? I wonder how it compares to the SED... I will pick either one of them...

Thanks,
Andy
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