Re-biasing a CJ Premier 8


I am considering to get a used CJ Premier 8 amp, current tubes are 75%-50% of their life (12 6550 per side) and dealer recommends me to re-tube both units.

1.- Which are the best options considering a high price/performance ratio?

2.- Any word on domestic Svetlanas vs fying "c" options?

3.- What about trying KT90´s?

Thanks for your feedback.

Fernando
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Since you are just starting out with these amps, I would suggest the Svetlana (SED) flying C. They are very reliable and produce a fairly balanced tone. The KT90's may have tighter bass and maybe a bit brighter tone - my biggest reservation is about the reliability of current production KT90's. Sonically, its your choice.
I used Ei KT90s in my Elevens very succesfully. They seem to be loved by many.

Enjoy your Eights; they're fabulous amps

BTW, I think you meant 'retubing'.
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I'm sure you meant 8 per side. I also say, use the old tubes to get a fix on what they sound like---then you will notice the dif. when you do retube.