why does only one 300b tube glow Blue at the top?
Greetings all,
I'm brand new to tubes and just got a pair of 300b SET monoblocks. For my 300b tubes (ONE in each monoblock), I've got what is supposed to be NEW electro-harmonix tubes. When the amps play, all seems and sounds OK.
But ONE of the tubes glows BLUE at the top of the tube. The other one, on the other amp, is not doing this.
Could any of you enlighten me and tell me why this might be happening?
Ever seen it before?
Thanks and happy listening.
I'm brand new to tubes and just got a pair of 300b SET monoblocks. For my 300b tubes (ONE in each monoblock), I've got what is supposed to be NEW electro-harmonix tubes. When the amps play, all seems and sounds OK.
But ONE of the tubes glows BLUE at the top of the tube. The other one, on the other amp, is not doing this.
Could any of you enlighten me and tell me why this might be happening?
Ever seen it before?
Thanks and happy listening.
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- 4 posts total
- 4 posts total