#1
i know that 6l6 has that fender rich glassy clean sound and the el84 is jangley vox top end sound while the el34 has that thick clean and growling overdrive but what kind of sounds do other tubes produce like the KT range of tubes, i know certain kt's are just like the famous three but there has to be a difference somewhere.
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I mean this one time I was jacking it pertty hard and was making noises and what not

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#2
well out of the tubes i tried in my amp...

EL34 - gritty, lots of high mids, woody, flabby bottom.
KT77 - little darker than the EL34, a bit more lows response.
6L6GC - smooth high end, a bit scooped mids i guess, tight bottom.
KT66 - more high end response than 6L6GC, even tighter bass i think.
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#3
It's more the circuit than the tubes that makes those particular sounds, but a tube change can produce the slight differences EC already outlined.
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#4
it should be noted as "in the same exact amp" the tubes make that kinda difference.
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Custom Hand-wired Amplifiers and Effect Pedals.

Est. 2007


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#7
an amp that is designed for heavy distortion.

The soldano slo uses 6l6s
fryettes mostly use kt88s
caa pt100 uses el34s

the answer however is probably not el84s or 6v6s.
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#8
rectifiers use both and I need to change them so I was wondering wich one to pick
#10
just a few more examples, to give you an idea of what your looking for

Peavey 5150/6505s use 6l6's
The more wanted Marshall usually use el34's(they make 6l6 models as well)
Vox uses el84's mostly
and I'm pretty sure the Mesa rectifiers use some kind of combination or 6l6's and kt88's, but have a fixed bias selector to switch to el34s