....named MUYAMAN that he should check the global EQ. He said all of a sudden his amp started sounding tinny and i believe he's new to the amp so my bet is he was in the menu and accidentally set the global EQ to one of the bright setting. Maybe you (Steve) can mention that to him because he's updating firmware and is probably pulling his hair out while it may just be the EQ. Or maybe he accidentally switched cabs.