Tube change

I'm about to change my 6550/12AT7/6350 tubes on my VTL MB250. Do I need to set the bias dial to zero before replace with new tubes?

hi504-08-2008 10:43am

hi5 OP Details Discussions Posts This discussion Message User 60 posts 04-08-2008 at 04:26pm Copy Comment URL Report Comment Edit Delete Thanks!