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.
best preamp tubes ever.
reviewed by: nick
This tube was placed on the V2 of an H&K tubemeister 18. In V1 was placed a Tung-Sol 12AX7 New Production. The tubemeister got much better with much more functional tone control. Highly Recommended
reviewed by: Cristianoepm
I purchased this tube in addition to other tubes to replace the old tubes in a Vox Cambridge Reverb amplifier. I was impressed with the sound and reliability with these tubes.
reviewed by: Renaissance Man Andrew
I ordered this JJ-ECC83 to mate with a J-6V6. This preamp solved all my problems. Good price, fast delivery.
reviewed by: David Wiens
These are my go to tubes. Sound great every time. Better yet they kick a&&.
reviewed by: Mark Wright
Great Tube! Excellent sound and fast reliable shipping from Tube Depot.
reviewed by: Guy
I ordered just one tube for use in my DSL40C. I was searching for something similar to the my amp's stock tube. This tube has identical construction and tone. I like it and sounded well.
reviewed by: Jefferson Agostino
Ordered these tubes as part of a kit for my Blues Jr. Instant improvement in the sound of the amp. Tubes shipped the same day I ordered them and arrived very quickly and well packed. I really appreciate that Tube Depot
put these together in kit form so I didn't even have to think about what to order.I couldn't be more pleased.
reviewed by: Jones Hendershot
Excellent tubes... I have tried many and these are excellent....
reviewed by: Daniel Tramble`
One of the Sovtek 12AX7s in my Peavey Classic 30 blew. Since the other two preamp tubes are the same age, I decided to replace them all with the JJECC83s tubes-I absolutely love the sound. First time using Tube Depot, very pleased with the service. Ordered around 10:00 pm on a Monday, received my order Thursday afternoon. I will definitely use them again for future amp related needs.
reviewed by: James
These make my amps scream. Love these 12az7s the best.
reviewed by: D buttons
Purchased per Soldano’s recommendation for a Decatone amplifier. Completely happy with them. Tube Depot is great, and my purchase could not have gone better.
reviewed by: Charles
Used this tube in repair of a CB radio audio circuit. Works Great. Price is excellent.
reviewed by: Jed
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