Finally I got Walkabout Scout last saturday.. Wow, I couldn't be happier. I've check sound at my home after got back from G.C. It sounds like 24 track analog recording session for a long time ago which I never forget the sounds from tape..Mmmm. You know what I mean? Thick, deep, punch etc... Anyway, I tried search what you guys talking for replacement tube for Mesa but I couldn't find it.. So what do you recommend for tube? Please let me know.. Thanks in advance..