thewoodbutcher

Hi all i own a dream rig pod hd500 dt25 head 4x12 cab and jt variax my concern is what to do if and when the valves/tubes need replacing , hope this never happens at a gig !!!! and it fails how do i replace them never had a valve amp before always used solid state whats biasing etc and should it be done by line 6 service centre etc , but what happens if they fail during a gig ? please help thanks