Would an amp need to be rebiased if the stock Sovtek 5AR4/GZ34 was replaced with a NOS Mullard or Amperex? or are the tubes interchangeable?
Thanks for the info. Yeah, I was just going to change it for reliablity reasons, but wasn't sure if different brand recitifers could change the amount of power to the power tubes where a rebias would be needed...Originally posted by redjet55
the rectifier does not need any bias adjustment. But youre also not likely to hear a great deal of difference between rectifier tubes.
Longevity is the real advantage nos over new build, a nos tube would likely outlast the amp.