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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
128x128flg2001

Showing 4 responses by avguygeorge

avguygeorge
2,300 posts
 
When I had my 8's, I used a CAT-3--(10 tubes in that). Just before tuning my estate to my local DWP--- or my tube supplier---I sold the big-8's.--Now use CJ's 350 ss amp and may not have to go under. (I listened way more than some !!)
---Which made it costly.-- I could use up 3000 hrs in a week, and I never exaggerate.
avguygeorge
2,300 posts
 
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.
avguygeorge
2,300 posts
 
I guess the retube price includes the 12 driver tubes 6fq7 (8)and 5751's(4)----These make a big difference to be sure.
avguygeorge
2,300 posts
 
Believe me the drive tubes matter, more than you think.When you finally get around to getting some cryoed ones;you'll understand.
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