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What is the best tube for a Conrad Johnson

Hello

I have an older Conrad johnson permier 4 power amp in exellent condition running the top end of a set of infility RS-1b's. They have 7 emims and 4 emits per side. They are ribbon drivers. I want to retube it and would like an idea what EL34 power tube would sound nicer on my speakers. One other question is how do ruby tubes sound.

Thanks
Darin
darinkperih
chuck
203 posts
 
Darin,

There are plenty of good new production EL-34 tubes out there. The Svetlanas, Sovtek, Valve Art are all good tubes. The Svetlana is considered by many to be the most balanced of the bunch.
elevick
2,636 posts
 
Good tube sites:
www.tubesandmore.com
www.thetubestore.com
www.jeffssoundvalues.com
www.upscaleaudio.com
darinkperih OP
8 posts
 
hello again

Thanks for the help and i will let you guys know how it sounds with the new tubes.

Darin
darinkperih OP
8 posts
 
Hello

I replaced all my tubes with 8 Svetlanas(EL-34's)and new 5751/6Cg7 tubes. The amp deffinetly sounds much better.

I have one more question, I see in adds that poeple say that you con switch from EL-34's to 6550's or KT-88's on this amp. This amp has a bias conlrole for every output tube. So is it as simple as changing the tubes and resetting the bias. If it is, what is the benifet. (more power or better sound??????)

Thanks
Darin
elevick
2,636 posts
 
Ask CJ before you bother. They are quite particular. I don't think it will be worth the money.
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