JJ ECC83s / 12AX7 Preamp Vacuum Tube
These tubes are immediately discernible from other 12AX7. They have a construction that is similar to a frame-grid tube - similar to the Telefunken ECC803s. This construction makes them very rugged and reliable. This is one of the best new 12AX7 for any guitar amp. It is very musical - rich with great harmonics. An excellent tube in all Marshall amps in the three preamp positions.
Compare with other tubes here.
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I bought these for a fisher x100. It had a mix of vintage tubes in it including a legendary telefunken 12ax7. I'm quite happy with these Jjs as replacements for my well worn tubes.
reviewed by: Gregdude
This is a great sounding tube in every position of my Marshall dsl. I tried it in my H&K Tubemeister 36 also. The price is excellent for the quality. I’m getting these for the H&K now also.
reviewed by: Michael Babb
This is a terrific value tube for most duties . Robust and long lasting . Not as articulate as TungSol , but not as unreliable either. Rolled treble is good for bright amps or even slightly hissy resistor noise reduction .
reviewed by: Neil P
These JJ 12ax7 tubes are the only preamp tubes I have bought in a few years. No complaints. Have served me well and the price is lower than other brands !
reviewed by: Dale
Completely re-tubed the tired old Super Reverb used all JJ's - what a personality change. Lower lows, crisp clean highs and so much in the between.
reviewed by: Rich
Have used JJ power tubes, but this is my first JJ 12AX7. I used it on a 2-stage external gain boost, with a B+ of about 230VDC.
Lots of nice harmonics, PLENTY of gain. I compared it with a NOS GE 12AX7, and yes, there was a little, difference, but not enough to notice or care.
With Tube Depot's incredible price, this will now be my 12AX7 go to.
reviewed by: Frank Stroupe
Great preamp tube. I use them on all of my heads and consistent and reliable.
reviewed by: rik de cubas
I use JJ 12AX7 tubes extensively in new builds. Some amps get three of these, and in some amps I use this tube as a phase splitter. They're also resistant to microphonic. They're a great value.
reviewed by: Texas Tone Amps
Great tubes, used in vox AC-30 and they sound great.
reviewed by: Steve
This tube sounds great in the cathode follower position of my 5f6a inspired build.
reviewed by: Kam
Sounds great in my vintage Fender Champ!
reviewed by: Bodhi
JJs' are always a good tweed choice.
reviewed by: My go to
reviewed by: jake
Great tube for your Monney,they went in my Mesa boogie express 5:25 head and they sound very good
reviewed by: Madmac640
Inexpensive and well made tubes. I used these in my Fender Blues Jr amp with great results. I will continue to use these in my other amps when needed.
reviewed by: Stephen Holt
Great for the price. brought my amp back to life, I plan to get more in the future.
reviewed by: Gregg Johns
These tubes are the best bang for the buck! Low microphonics and rattling! A little darker than other tubes but nothing EQ changes can't fix!
reviewed by: Jesse
Like their 12AT7, this is really sturdy and low in noise. I really like it in the V4 slot in my deluxe Reverb.
reviewed by: Jesse
I use this tube every gear on my head amps, It' very clear sound and natural.
reviewed by: Nott
I've solved many problems with vintage and new combo amps with these tubes. Can you get a better tone? Sure, but realize expensive NOS tubes have been picked over for decades, and even mil spec or hospital grade tubes from yesteryear, while unique and sought after, often ring or squeal in a combo amp. The JJ ECC83s is very quiet and well behaved due to robust design, and sound so good at the price point, that it is a no-brainer. Tube Depot's extensive testing and the volume of these they deal with can get you very close to vintage tone with no worries!
reviewed by: Kenneth
I decided to replace the 3 12AX7s and 2 EL84s in my Crate VC20 amp because one of the tubes had gone microphonic--I didn't know which one, so I decided to replace them all. I used three of these JJ tubes because they were reasonably priced and had very good reviews. I'm very happy with the way the amp sounds with these tubes (plus two new JJ EL84s) and it fixed the microphonics problem I was having. No complaints.
reviewed by: Bob D
reviewed by: Aldo
Great tube i use these is everything. Sometimes i try others but i always go back to these. Love my Jj's
reviewed by: Nuclear Guitarfare
The JJ ecc83s is a excellent preamp tube! In the modern times we live in it is great to be able to purchase a new tube of this quality. I tube rolled nos mullards, rca, ge, and compared them by ear then by recordings all at the same settings, and my conclusion is that the ge is quite close to the jj but not as open and airey, the mullard is good like the rca, but with my setup the jj is hands on a better tube especially because of availability and price! I use them in all my amps, and to my ear is better than the reissue tung sol. Of course there are a lot of factors involved in acheiving that sound guitarists are looking for. For the price, buy one or two break them in 20+ hours and give them a go. I've been using jj tubes for the past 6 years, have always bought them from Tube Depot. They are the best tube supplier that I've ever ordered from, so do your ears a favor and listen to the sweet harmonics you can get from the JJ ECC83S!
reviewed by: Eddy Chicago
These are my go to tubes. Sound great every time.
reviewed by: Brian Deer