Preferred Series 7025 / 12AX7
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
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Warranty Information and Return PolicyWarranty 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.
Ratings & Reviews
This quad got noisy
I purchased a matched quad of these preferred 12ax7 for the phono stage in my Copland preamp in Dec 2014. While they weren't the quietest tubes, I liked the tone and so there they have stayed for the past 10 months. In recent weeks I have noticed the my phono input has gotten noisy. Unlistenably noisy. I'll be trying something else this time around. I think they should be good for more than a few hundred hours.
I've a Sansui AU-111 audio amp, a real legend. I was looking for some new tubes to waken the front end up a bit - current selection was a mix-match of brands. I decided to give these a whirl.Its been one day and I'd like to say well done. At this point, resolution and detail improved. Things settled in - in terms of a better soundstage. All and all, the amp sounds right. If the reliability is up there, I am a fan! I've also bought the 6L6's...have not installed them yet, looking forward to it!
5 Star in a Vox AC30
You can drive yourself crazy (and spend a lot of $) tone chasing. Fun, but sometimes not worth it. Trying out these Preferred Series 7025s was worth it. I run single coil pickups into a medium distorted Vox and these tubes compress nicely and give me punch and clarity without harshness. They have less gain than JJs or Sovteks or Tung-Sols but the AC30 runs hot and bright so a little less is good. Probably not so good for humbuckers or active pickups into high gain amps.
Night and Day
Got this tube awhile back and been swapping around with a few different ones to find the tone I like. I run a Tung-Sol 12AX7 in v1, the Preferred Series in v2, and Sovtek 12AX7LPS in v3 in a Peavey Valveking 212. Man with my active emgs the clear resonance and sustain are amazing. I had a JJ ECC83S in v2 and was muddy and very harsh sounding. The difference was night and day. The Preferred series is bright, natural, and clear as a bell. Buy this tube... love this tube.
Replace 4 really old 7025 out of my 70's Traynor YGM3. Brighter and really great gain. Amp is killer with these little tone monsters. Nice clarity through the whole range. Highly recommend.