Blackstar Artisan 30 power valves

[adams]

Hi, this is my first post on this forum. I need to replace the power valves in my Artisan 30 but am wondering if the amp needs to be re-biased afterwards or not? It is cathode bias as far as i know. I have a matched quad of JJ EL84's ready to go in but am unsure whether i can just replace them without worrying about bias.

Thanks for any info on this!

[didit]

Hello -- That'll work fine. It's an AC30 clone, so yes cathode biased.

[adams]

Great! Thanks a lot!