Preferred Series 7025 / 12AX7 Preamp Vacuum Tube
This 7025 is a high quality and very rugged custom 12AX7 tube produced for us in China by the Shuguang factory. The plates are manufactured out of a premium metal imported from Germany and supported with extra thick mica spacers to insure against microphonics. They are burned in and tested at the factory and then again on our digital high voltage equipment to make sure the tubes selected for you will provide outstanding tone and performance.
From our review: "A great sounding 12AX7 tube type that reminds me a little more of the ECC83 that Ei made in the old days. That's a pretty nice compliment. I compared this tube against an old Ei and Telefunken smooth plate and there was very little difference. Lots of gain with a rather low noise floor. No microphonics issues at all. Very good considering the large plate size. Spot welding may be better for microphonics than crimped plates. I tried it in all the standard guitar amp duties and it was fine. Fabulous in Blackface Fender amps. We tried this 7025 in a 66 Vibrolux reverb 2x10 combo and the tones were all there. Light and shimmering or really aggressive, it's all good."
Warranty: The Preferred Series 7025 tubes carry a 6 month extended warranty.
Other Preferred Series tubes 
12AX7 TypesAdditional Information and Downloads
Reviews:
12AX7 Tube Review
Tube Matching Information:
Matched Sections Service
Downloads:
Preferred Series 7025 Datasheet (PDF)
Download Adobe Acrobat PDF reader
Warranty Information and Return Policy
Warranty Period: 6 monthsPreferred Series tubes have a 6 month warranty from date of purchase. (Any exceptions will be noted on that tube's Warranty tab)
If you receive a tube that does not perform to the manufacturer's specifications, please do the following:
- contact us to get a return authorization
- return it via regular mail within 180 days from when we shipped it, and we will provide an exchange or refund of the full purchase price of the tube.
Returns not related to warranty or defect will be considered at our discretion, and are subject to a 15% restocking fee.
We can not accept returns that don't have an authorization, are past 6 months, or are returned improperly.
These guidelines may be updated without notice.
Ratings & Reviews
86 reviews
Wow
by Brian
First time I've ever written a review. Got two of the 7025/12ax7 Preferred Series as well as a JAN 5651WA for my Croft Line R Integrated. HUGE improvement! Bass is more solid, there is increased separation of instruments as well as extension of the low and high frequencies. Very pleased with these! Highly recommended.
Good, not Great
by QueasyRider
On a 1974 Marshall JMP (SL 1959) with clone 1968 board, playing a 2003 Gibson historic 1958 Darkburst LP, and my old ears, this tube is Good. It had more hiss and less harmonic content than TungSol Gold, and even Svetlana. Yes, I threw 2 of these into both V1 and V2 just to be sure. They're not bad enough to throw out, but I would rather spend that comparable money for TungSol Gold, or even spend less for Svet. Next time, that is.
AC 15
by Mike
I put these in my Vox AC 15 Twin. Very pleased with the tone. Also they hold up great considering how hot Vox amps run. Now have them in my AC 30 as well.
Sound Great
by James B
These sounds great. I would recommend them to any. I'm using them in a Traynor YGL2. Crisp clean, cleans and great distortion.
Holy Crap
by Chris M
What an awesome tube!!!! Put two in a Fender twin I refurbed, zero mechanical noise. Well balanced and smooth, bright tone.Thanks!!!!