S sleepingtiger Well-known member Joined Jul 19, 2006 Messages 125 Reaction score 0 Location Northern Illinois Jan 30, 2009 #1 When did Mesa switch to 440s from 430s? Thanks, Tony
D dwsabianguy Well-known member Joined Jul 25, 2008 Messages 96 Reaction score 0 Location Raleigh, NC Feb 10, 2009 #2 I don't know, but I do know that the 430s were Sovtek 6L6WXT tubes. My estimation is maybe 2000?
