Has anyone asked xDuoo if a 12ax7 tube can be used with this amp and if there are any hazards, expected sound problems? I've found a Genalex Gold Lion 12ax7 locally at a good price but I'm still not sure if I should take the risks. I've read that "upgrading" a 12au7 (mid gain) circuit to a 12ax7 tube (high gain) can cause circuit overdrive and god knows what else can happen.
Please advise if you have such experience. Thank you!
Please advise if you have such experience. Thank you!