Anyone use these tubes?

[marnold***]

FWIW on Jet City's website, they sell a version of the JCA20H head that they call the Comet that (besides a new baffle) has Sovtek 12AX7s and matching JJ EL84s. The site says that they chose Sovteks for "high-gain, low-noise, and long life."

I wouldn't mind taming the noise a bit on my amp at volume but a) it's not a huge deal and b) between my fluorescent light, my CRT, and the fridge/freezer in the next room, my office is a noise factory. Someday I'll get JJs from Eurotubes, but we will see . . .

[tunghaichuan***]

FWIW on Jet City's website, they sell a version of the JCA20H head that they call the Comet that (besides a new baffle) has Sovtek 12AX7s and matching JJ EL84s. The site says that they chose Sovteks for "high-gain, low-noise, and long life."

That should be taken with a grain of salt. The EL84 by design is a high gain tube and power tubes in general tend not to be microphonic like preamp tubes. If they are using the Sovtek EL84M, that is the Russian mil-spec version of their EL84.

[kiteman]

That should be taken with a grain of salt. The EL84 by design is a high gain tube and power tubes in general tend not to be microphonic like preamp tubes. If they are using the Sovtek EL84M, that is the Russian mil-spec version of their EL84.

I have two Sovtek EL84Ms which was in my Blackheart when I had Tung-Sols in it too. My idea was to make the amp as transparent as it can be for the pedals and that seemed to work.

[marnold***]

That should be taken with a grain of salt. The EL84 by design is a high gain tube and power tubes in general tend not to be microphonic like preamp tubes. If they are using the Sovtek EL84M, that is the Russian mil-spec version of their EL84.

Yeah, I always take tube recommendations with a grain of salt, but it is the preamp tubes that are Sovteks. The EL84s are JJs.

[tunghaichuan***]

Yeah, I always take tube recommendations with a grain of salt, but it is the preamp tubes that are Sovteks. The EL84s are JJs.

D'oh! Looks like my reading comprehension skills need some work.