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Tubes glow blue...

jspartz

Silver Supporting Member
Messages
140
Hello,

I have a Sano 2x12 tube amp with 7591 power tubes in it. They have a blue glow to them. Is this a sign of trouble or is it somewhat normal? I do not see that with my other tube amps.

Jason
 

Blue Strat

Member
Messages
30,595
What they said. Blue Glow is not an indication of anything bad, but it doesn't guarantee that the tubes are OK either;)
 

Zero Point

Member
Messages
483
Blue is actually high quality. It's the gas inside the vacuum. Pretty sweet!

A 'bad' tube burns orange/reddish to red. :p that's not good.

-ZP
 




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