Mesa 12AX7 preamp tube vs. Generic tibe

[rkaczano]

How picky is a Mark V with its preamp tubes? Do I need a Mesa Mesa branded 12AX7 for the V1 slot or can I use any type of 12AX7?

Thanks

[wildschwein]

You can put any 12ax7 in there. How it will sound and last will depend on the tube but it will work.

[rkaczano]

Ok thanks - do you know what would be a good replacement for a Mesa branded 12AX7? I know Mesa does not actually make their tubes but I cannot find any Mesa branded ones at the moment due to the tube shortage.

Thanks again.

[KRichter]

Ok thanks - do you know what would be a good replacement for a Mesa branded 12AX7? I know Mesa does not actually make their tubes but I cannot find any Mesa branded ones at the moment due to the tube shortage.

Thanks again.

I've used Mesa, JJ's, Electro Harmonics, Mullards, all with good results.

[wildschwein]

Yeah JJs are readily available. Eurotubes does full re-tube kits and the power tubes are in the right bias range for Mesa amps:
https://www.eurotubes.com/store/pc/Retu ... sa-c10.htm