Whats is 'tube rolling'?

Ive seen that term used and am curious if its adjusting induvidual tubes or is an expression for trying diffrent ones.
Thanks

bozzy08-04-2004 4:04pm

cdjorgen Details Discussions Posts This discussion Message User 11 posts 08-06-2004 at 09:38pm Copy Comment URL Report Comment Edit Delete I don't know how the Mac 2275 could sound any better. Going to save my money for foolish things like good Bourbon whiskey to enjoy while I listen.