1959slp bias question

[Liquid Sunshine]

Is there an adjustable pot inside on the pcb board for these? I have a 1994 1959slp RI. Or do you have to change a value somewhere. I'm bringing to my tech...this is just for my own knowledge. Thanks

[jezzzz2003]

Adjustable bias and noise bias mounted inside on the PCB.

[Liquid Sunshine]

Adjustable bias and noise bias mounted inside on the PCB.

Thanks for the quick reply!:) :)