cupcupcup New member Joined Mar 11, 2007 Messages 2 Reaction score 0 Feb 27, 2009 #1 I accidentally threw out the power tubes for my Mark IIB when it was shipped to me. It had 2 6L6 Groove Tubes in it before...can i just plug some Mesa tubes in there (because it's fixed bias?) or do i need to get it rebiased?
I accidentally threw out the power tubes for my Mark IIB when it was shipped to me. It had 2 6L6 Groove Tubes in it before...can i just plug some Mesa tubes in there (because it's fixed bias?) or do i need to get it rebiased?
