Preferred Series 7025 / 12AX7

84 Reviews
SKU: PS-7025

Availability: Usually ships within 24 hours.

USD $‎39.95
The Preferred Series 7025 is a high quality 12AX7 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 Types

Additional Information and Downloads

12AX7 Tube Review

Tube Matching Information:
Matched Sections Service

Preferred Series 7025 Datasheet (PDF)

Download Adobe Acrobat PDF reader

Warranty Information and Return Policy

Warranty Period: 6 months

All our Preferred Series tubes are guaranteed for 6 months from the 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 6 months 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.



This is the best tube I have ever heard/felt in a BJR (2012 Tweed NOS Cream Board, billm mods, Jensen C12N) and HRD (Jensen C12K). The Tube Store is providing an 'honestly' superb 12AX7 tube in all respects. I have been dealing with the wonderful folks ("Jon") at The Tube Store for a little more than 10 years when a 'pair' of Winged C's cost 60 bucks! "Preferred Series" labeling does not resemble Groove and Ruby Tubes marketing gimmicks in which cheaper tubes are simply relabeled and distributed at considerably higher costs. Perhaps we (Americans) could learn a thing or two regarding honesty from our Canadian brothers and eventually turn-around our miserable economy?

Too clean


I ordered this tube depending on the reviews and the description stated here, on this page. Moerover, my purpose was to change my home amp, Orange Micro terror head's stock JJ-ECC83s tubes as I was not happy with the microphonics at high gain. Moreover, I also added the matched triodes option when I was ordering as my amp has the phase inverter circuit on itself. I chose the Preferred Series 7025 to give it a try to see if it would solve all of my problems.

Yes, it did! It really solved all my microphonics and hiss problems even in higher gain levels. I don't notice a great differential with the gain rates but the musical details definitely got much more clear.

Just like any tube amp, it's better to wait it get warmer, like 30 minutes, in order to have a definitive idea...

If you are a kind of player who often uses compression with OD or distortion together to get a smooth and sustaining tone, this one will probably be the best option.

For Orange Micro Terror , I'd read that any tube replacement would be useful. This one did that too...

The only down side would be for players who really demand the typical hums of the tube amps. This tube is way too clear or let's call it "transparent". This is an advantage if you have and actively use a long, analog FX setup between your guitar and the amp. With processor use, it may sound transparent, more than expected from a valve amp.

After I ordered it, it reached me exactly on the 15th day. As I live abroad, I believe this period is pretty acceptable. The packing was superb, even better than I could do if I'd send it to myself!

A Disappointment


I bought this as part of my new Tweed Deluxe build. I bought and tried combinations of 12AY7, 5751s and 12AX7s, new and NOS. I compared to 1950s NOS GE, 1970s Ei, and I found this tube in V2 to be bright, harsh and not musical. It may be fine in a newer build like my Mesa and I may try it there and create another review. But for a tweed vintage sound, I would recommend looking at a NOS tube, not this one.

Preferred Series 7025, my go-to 12AX7


The Preferred Series 7025 have become my go-no new production, high quality 12AX7. I start by putting two in V2 and V3 in a '68 Marshall JMP50 and I loved the tone. Then I dropped two in a Fender Blues Deluxe (also V2 and V3), and again, I loved the result. But the most dramatic change came when I re-tubed a friend's Fender Super 60; its preamp tubes were pre-historic! I dropped in two PS7025 in V1 and V2, and the amp was absolutely transformed. It was hard to believe a "red knob" Fender could sound so good. Now, I keep a private stock of PS7025's for whenever I need a high-quality, high-performance preamp tube.

7025 preferred


Ordered these tubes for my 73 Fender Vibrosonic along with some T.A.D. 6L6 GC and I couldn't be happier. I've had this amp for 20 years & always sourced NOS RCA tubes untill now. Given the NOS RCA sound 10/10 This combination of 7025/TAD 6L6 is easily 9/10 for a fraction of the price. As I ordered a bunch of 7025's I tried them out in my Evh 5150iii 50 watt with TAD 6L6gc with great results, creamy overdrive & big cleans. (These EVH iii amps give great Fender clean tones for a good price.) My work horse a Egnater Tour Master 4100 took on a hole new life of its own & my former work horse a Marshall DSL 100 (1999) Model has never sounded this good.Well worth the price!