how important is linestage preamp with vinyls only

Dear Avs9, You have some top quality cartridges, a really good selection. Pardon my saying so, but the cartridges exceed the capabilities of your two tonearms. A tonearm upgrade might produce more results for you than tube rolling, not to mention that you should also check out your tt to be certain the belt is not stretched out, etc, and that it is running at correct speed even when under load while playing music. Those are easy things to do.

I don't want to take business away from anyone, but the price you quote for matched tubes is, shall we say, high. Remember that matched tubes can age at different rates such that eventually they are no longer matched, and in all but balanced circuits, I think matching is over-rated. So long as the tube is not noisy and as long as both halves of these dual triodes are in good condition, I would just use singlets. Lots of tube vendors will test for this standard.

I find it odd that CJ says they will not upgrade the coupling caps in your unit but they do so for other products. Any good local tech can do it for you, if CJ won't. Try some teflon output caps; you will be amazed. Finally, be aware, if you are not already, that you cannot just plug any old 9-pin miniature tube into any old 9-pin socket. To use 6DJ8, 6922, 6H30, etc, in your preamp would require some major re-design of the circuit. But if 12AU7 is begin used as a cathode-follower at the output, you might try an ECC99 there or any of several 12AU7 direct subs.

Dear Lewm,
I got it wrong from CJ I am afraid – just spoke with Ed from CJ, they CAN do the teflon ones on PV12, the price I guess is not a secret it is $1200. I am not sure if I can find a cheaper option here. The teflon upgrade on the PR16 is actually much more! So I may consider staying with PV12 after all.
Yes, thanks for pointing out my arms deficiency. The upgrade was actually planned, still working on it. Now if you can make another step – how does RS-212D sound (used, mint for $1450) for Windfeld and used SME 3009 type for Colibri? The Colibri Light Weight is a demanding baby, with only 5 grams weight it asks for the lightweight arm not above 14-16 gr effective mass. The thing is I can not bring myself to buy what is being a little far from the classical (IMHO) type like SME IV or SME V or linear tonearm. I am more into classical style like Ortofon, Origin Live, earlier SMEs etc… I guess the Ortofon applies some fees with the brand name, not sure how wrong it would be to assume that the Ortofon arm will suite the Ortofon Windfeld better, they seem to fit based on the compliance factor.
For the tubes price I checked a few sites mentioned on this forum, the best ones like Mazda silver plate triple mica is $425 per pair, 12AX7 Telefunken smoothplate, diamond mark 1960s, $230.00 per pair. So yes, you are correct - there are options, staying with PV12 I probably don’t have to go high, like you said with cartridges – the PV12 (and my CJ MV60SE later in the chain and not above average speakers, I used Audes from Estonia) would probably limit the benefits of the most costly tubes. I need to do more leggwork here I guess.
Much thanks

Sorry. I have no experience with any of those particular tonearms, but I do have a bias (why not?) in favor of the modern SME tonearms over the old SME tonearms, e.g., 309 vs 3009. For tonearms in the $1000 to $2000 price range, I like the Dynavector DV505 (no longer made but can be found used for about $1200). I suspect that the Ortofon tonearms are quite good as well, but with no direct evidence. I also like Technics vintage tonearms EPA100 and EPA500 and Micro Seiki MA505. These can be bought for less than $1K. Fidelity Research FR64S is in the price range and is said to be great for low compliance cartridges. Victor, SAEC, and Lustre are other vintage brands that are excellent for well under $2K. RS Labs RS-A1 is very odd to use but sounds good, too.

I must say I never imagined that 12AX7s had gotten so expensive, but you are paying a premium for "matched pairs", which I would not do.

AVS9 , All the suggestions in the above posts will help you achieve nirvana but prior spending your $$$ I would suggest getting your turntable away from the rear corner and moving your speakers further into the room and away from the side walls.You may find this is all you need to allow you to just sit and listen.Upgrades can be done in the future after you find the proper placement for your speakers and turntable.
Really nice equipment for starting only one year ago.
Take your time, your on the right track
Enjoy
ed

Thank you all, very much appreciate the feedback.

Ed - why move the TT from the corner?
And about the speakers - the nirvana room is pretty small - 14 x 11. What distance in your opinion I should maintain between the wall and the speaker in this speakers corner?
Thank you
Anatoliy