A tube question

[recto preo]

Hi im new to tube amps and i want to know aobut replacing tubes.

I have a Mesa F 30 and it has Mesa EL84s in them. My question is,if i get some JJ Tesla EL84s matched pair, do i have to rebias my amp or anything?

 

[dennq45]

There is no bias adjustement in Boogies unless someone has added it to the amp. If it's new, then you need not worry. JJ's are pretty good.

 

[alejandro]

There is no bias adjustement in Boogies unless someone has added it to the amp. If it's new, then you need not worry. JJ's are pretty good.

For the sake of encouraging experiments with curiosity... By most accounts here, the JJ/Tesla tubes are a good alternative. And they appeal to Libras. They're a comfortably-numb bang for your girlfriend. And they make great stocking stuffers!!