It's normal, I called SED a while back, they said not to worry.
I have two quads of SED KT-88's, they all have a blue glow, plus they sound great.
I have two quads of SED KT-88's, they all have a blue glow, plus they sound great.
1 tube glowing blue?
I just replaced the SED 6550 tubes in my VTL MB450s. In 1 amp there is a tube that is glowing blue. Is there something wrong with it? Dont want it to blow.