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.
Whether you are looking for good performance or low price, I can recommend the JJ 12AX7. I have it in a number of guitar amps (some that I built) and a hi-fi amp (that I rebuilt) and they work well in both applications.
reviewed by: Rick
I use this tube as my everyday listening tube currently. I favored it immediately above new production Tung-sol which came with my Jolida Tube Dac III (I have 2 of them, which allows me to A/B them).
There was more harmonic information and slightly more warmth, but plenty of crisp high frequency detail and air.
It is a very coherent sounding tube that faithfully plays back music with a sense of the whole recording; it doesn’t try to dissect the recording, while still allowing one to follow individual aspects of a performance if desired.
It gives you that bit of “extra” that solid-state always seems to lack on stringed instruments, voices, timbral resolution, etc. It is subtle but noticeable, which will please those who don’t want to veer into tubby rolled-off sounds.
Compared to a new production Mullard, it is a little less boisterous, in terms of its presentation. The Mullard gives a little extra “extra”, relative to my comments above.
However, while the Mullard is slightly preferable with classical, jazz, small ensembles and acoustic performances due to its highlighting capabilities, one might argue it is a bit less refined and coherent, especially when pushed hard. This isn’t bad, just different. Even certain metal tunes can sound great with the Mullard, but it sometimes loses its composure.
So then, the JJ ECC83s, is a stellar all-rounder and a very satisfying tube.
reviewed by: Home base!!
I use this at the tone control on my Eico HF-85. and ECC803 on my V1& V2. sounds excellent
reviewed by: Gordon
.First class preamp tube.I use these as standard to compare NOS tubes
reviewed by: Shawn Wood
Best preamp tube for the money!!
reviewed by: Christopher Lineberry
First re-tube in my haze40 without microphonic noise. Fast shipping, well packaged. free shipping over $100, like that!
reviewed by: John Coyle
Installed these in my Reverend Hellhound and they sound great!
reviewed by: Gerry Mattei
I installed three of these in my 2000 Marshall 1959SLP and they sound great. I highly recommend.
reviewed by: Yugedrums