P primeholy Well-known member Joined Nov 2, 2008 Messages 252 Reaction score 0 Location Chattanooga tn Nov 23, 2010 #1 at practice, loud buzzing humming on all channels. What could it be?
B Barry Well-known member Joined Sep 13, 2006 Messages 1,141 Reaction score 3 Location South Carolina Nov 24, 2010 #2 Mostly likely a preamp tube going bad .
