Tubes 6L6 or KT66

Mike Simpson · Post by **Mike Simpson** » 3 Dec 2004 10:46 pm

Does anyone know the differences in 6L6 and KT66 tubes? The stuff that I find on the internet says that they interchange. Does the 6L6 have more output? I have 2 amps and the one with 6L6's is louder and does not break up as soon. I know... I should just switch them between amps and see what happens but I thought I would ask if anyone knows the difference.

Thanks,

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Big Mike http://www.blueswizards.net

[This message was edited by Mike Simpson on 03 December 2004 at 10:47 PM.]

Tony Prior · Post by **Tony Prior** » 4 Dec 2004 6:15 am

They are similar, but not the same.
You should really only change power tube types in your amp if you can re-bias your amp for the new power tubes . This may also require changing bias resistors as well for max. efficiency.

Tube amp circuits are designed specifcally for the type of tube that is used..can you swap ? yes..should you ? Not sure...

It's like Elaine says on Seinfeld..

"They're exactly the same, just different"

try this link, it may be of some help..
http://www.thetubestore.com/sovtekkt66.html

They seem to feel there are no issues..
good luck

t
[This message was edited by Tony Prior on 04 December 2004 at 06:18 AM.]

Garth Highsmith · Post by **Garth Highsmith** » 4 Dec 2004 10:18 am

.[This message was edited by Garth Highsmith on 09 January 2006 at 08:53 PM.]