Electro Harmonix 12AX7EH Tube

This valve was one of my two choices out of six in total, to use with my guitar tube pedals. It behaves well under all tested circumstances: from cleans to heavy metal riffs. Compared to the other 12AX7 brand, this one was *slightly* towards the high-end, *a bit* less low-end feedback, therefore I chose this one for the distortion pedal. Other than that, they are both great tubes and their sound is powerful, defined and versatile: neither too bassy, nor treble and aggressive, just by no means low gain.

Not only quality but you can trust you're being looked after by Thomann and that you're not getting ripped off! Top Marks Thomann!

Great hard rock tubes. If you like your rock and metal give these a try, I wont use anything else after finding these. They make JJ's sound cold and sterile, Tung Sols, Ruby, or Groove Tubes dont come close when compared to these, well at least to my ears for a drive tone.

Cleans are nice, chimey and lush. Although there's probably better choices for a clean tube.

Work great in in a ENGL E530, and transforms old Digitech rack tube preamps into a usable bit of heavy rock kit.

I replaced the ones that came with my amp and I got a much warmer sound with them.

Used this replace the JJs I had in my Engl e530. The noise reduction was very significant at high gain settings Definitely gonna get some more for other amps with high gain.

I bought 3 pieces to replace the factory tubes on the HB TUBE15 Celestion amp. With the gain all the way up, they are slightly more quiet than the factory ones. These tubes should be the standard in ECC83/12AX7 amps.

I bought a pair of EHX 12ax7eh tubes for my vintage bass rack preamp.
I don't want to fall in the NOS tube market rabbit hole, I need fresh new tubes at reasonable price.

This pair of tubes sound very good and is all i need.
Thanks EHX and thanks Thomann

Use:
Changed it with the original tube in my old mans Vox Valvetronix VT50.

The tube does it's job well - can not comment on the difference with the original as I can not hear any.

Low noise, not microphonic, good gain. Currently sitting in my SCT800, though I used it in my Vox VT50 for a while too.

As good an incarnation of the 12AX7 as you're going to get get.

Its better than the stock tube of the Bugera G5 however it is quite subtle change...however the high end/clarity seems to be a lot more pronounced and it feel a little more alive.