cjar66

Hi guys
I have a jtm 45 re issue that currently has EL34 in it. I bought it second hand and figure it wouldnt hurt to update the tubes in the not too distant future.
I would like to know what tonal differences can be expected between EL34's and KT66's, and are there any other differences IE: power/volume reduction etc.

Thanks
cjar (rob)

fdesalvo

The KT66s will give you more bell like cleans with more bottom end, as well. You may not find them to be as bright or barky as the EL34s, either. I would expect a little more clean headroon. These are gorgeous sounding tubes.

Just my .02uf.

ECwomantoneman

Well, I'd say the KT66s are a bit "smoother" and cleaner, but EL34s have a bit more classic rock style grit and punch to them. KT66s are probs best demonstrated by the chiming cleans of a JTM45/BB combo, and the EL34s the smooth, dirty sound of Hendrix and Page.

cjar66

Hi Guys
"EL34s the smooth, dirty sound of Hendrix and Page" - thats a damn fine sound to me!!
What brand do you recommend? It currently has rubys in the power section and still has the marshalls in the pre amp section
Thanks
Rob cjar

stryker59

i put jj's in my jvm and they sound great!!

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radiomatts

I use the new Groove Tubes Mullard reissues in both my Marshall head and my Laney combo and love them! If you can afford to, buy a few different kinds and see which suits you better.

speakerfritz

humm.....I thought el-34's=kt-77's and 6l6/5881=kt66's. Some amps can take all, some are configured for a select....just something to check on....you might have already looked into it.