Preferred Series 7025 / 12AX7 Preamp Vacuum Tube
The Preferred Series 7025 preamp tube is a high quality 12AX7 vacuum tube type. This tube is a reproduction of the highly regarded and sought after Mullards from the 1960s.
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
83 reviews
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!!!!
Excellent !
by Andy S
Super articulate but also very warm sounding. Notes ring out beautifully without sounding brittle. Using this in V1 in a ValveKing and also in V3 (reverb recovery) in a Hand Wired Princeton Reverb clone.Great results in both positions.I'd also like to thank Dave for the exceptional customer service as always ..... 2 thumbs up !!!!
Finding the best phono section tube
by R.Jobagy
I have tried and spent a mighty sum of money trying to get the best out of my decware phono section. Compared to the many 12ax7 tubes I have tried these 7025 tubes best the lot of them by a huge margin. The search is over after all these years and money spent. I would never have believed it if I had not heard it for myself. A tube made in China beats all other 12ax7 tubes I have tried. What's that old sayin', better late than never. Well done thetubestore, you hit it out of the park with this one.