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This tube has a well balanced, colorful tone with strongly defined lows, mids and smooth highs. It allows for more clean head-room than higher gain 12AX7s. In overdrive, it is smooth and strong with well defined lows and mids. When pushed into overdrive it offers clean distortion with well balanced lows and mids. The JJ 12AX7 is well suited for all types of music and playing styles. It is also highly recommended for studio pre-amps and hi-fi gear
LeRoy D
Reviewed in the United States on September 17, 2024
I recently bought an class D amp that had 3 of these amplifier tubes. I noticed the amps output just didnt have the clarity or ooomph so i figured the tubes are just weak. I was right, and now the amp is powerful , clean and has the oomph i need.
Customer
Reviewed in the United States on March 26, 2024
Brought a dead OD Chanel on my fender hot rod deluxe to life! Great: smooth, compressed, defined articulate! Clean Chanel chime restored and screamin OD! You won’t regret it if you’re a tone snob!
Michael K Shipley
Reviewed in the United States on November 20, 2024
Easy install, but don't sound quite as good as the Mesa Boogie tubes.
Kevin D.
Reviewed in the United States on April 6, 2024
JJ is a good brand. Nowadays, ALL vacuum tubes are made overseas. These tubes are used in the front end circuits (preamp, reverb), and there are usually 3 of them.
Michael L. Fiore
Reviewed in the United States on April 13, 2024
I replaced my stock tubes in my VOX AC15C2. I had a bad power tube. I checked it using the chop stick test. So I replaced all of the tubes at the same time, power and pre-amp, with JJ tubes. The sound is fantastic! Never better!
Matthew Lebish
Reviewed in the United States on March 22, 2023
I ordered these based off some articles I read, for my Vox AC15. I was worried some reported it would have a darker sound and wasn't the best for the AC15. And I needed tubes because my had died out on me. Well I got them and from prior recordings I took of the amp with the original tubes in to the swap they sound amazing perfect fit for that vox chime!
Tracy
Reviewed in the United States on December 6, 2023
for a small mom and pop business the price was great. i was very worried about the packing just hoping they would not arrive broken. and i was very surprised when they arrived perfectly packed.i will be needing a lot of tubes because i am starting to build guitar amps now . and i will look here first before buying from someone else. thank you so much tonaltubes. P.S. sorry the review was a little late but i made sure to do it for you.
Teapot
Reviewed in the United States on September 15, 2014
I just received these tubes in the mail yesterday, and I installed them right away in the preamp section of my Jet City 20w combo amp (JCA2112). The tubes in the amp previously were marked "made in china" and were 12ax7R, which I think must be the same as the ax7s, do to their pretty high gain tendency. I picked the JJ's at the recommendation of the Jet City's product support guy, and based on some positive feedback from fellow musicians.I've only had the tubes in for about 36 hours now, but last night I put them through about 3 hours of gig time and they sounded great. The item description that Amazon provides is really pretty right on- these tubes increase clean headroom nicely. The original stock chinese tubes broke up almost instantly, and while that was fun for heavier rock, I've always been displeased with the lack of clean tones my amp could provide. The JJs changed all that in a hugely noticeable way. I'm reserving my final judgement for a few weeks from now when they've had another 10 hours of playing time, but here's what I've noticed so far:-Great headroom and very musical, lush breakup- not harsh, jagged distortion, but creamy, bluesy drive.-tight lows, very pronounced mids, and a nice, chimey high-end that isn't brittle at all.-The note separation that the increased headroom gives is really great, and even with the preamp gain cranked, lead runs and hammer-on pull-of stuff has a nice, clear quality to it that allows notes to cut through the breakup in a really cool, vintage sounding way.I guess I should also add that while this 3-pack isn't eligible for Prime, I received the package in 3 days and it was very well-protected. I would recommend the JJs, especially if you have an amp that comes stock with chinese tubes. These really do make a difference in tone.
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