For my Stax 007t/ii amp, I am thinking of tuberolling in some Brimar/Mazda 6FQ7 or 6CG7 tubes (2 matched sets).
First, can I just plug them in w/o biasing them just to hear how they sound and if I like them,
later ship the amp and tubes to Stax/Yamasinc for biasing?
(And if I don't like the sound of the new tubes, just reinstalling the original stock tubes and be back where I started.)
Will this work?
(I have SR009 phones).
Get a multimeter and do a search - it's quite easy to bias the amp