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.
Tubes arrived in great time as always and they work great. I ordered the low microphonics version.
reviewed by: John Clements
Fast shipment and best prices.
reviewed by: Mike G from the QC
Tubes arrived fast and in top shape. Best prices. Will order again. Thanks!
reviewed by: Mike G from the QC
Order these, they came quick and sound fantasic
reviewed by: 69Hendrix
I ordered a set matched and balanced for my Mjolinir. Smoothed out amps response. Great tubes and service.
reviewed by: charles chriscaden
Good tubes at a good price!
reviewed by: Jlhilldrup
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