A few weeks ago my Dyne head started doing something very odd at a gig. It is most obvious when playing a chord, as the volume starts to die down the amp (for lack of better description) almost sounds like it has a tremolo on it, the volume sputters about.
At first I thought I was a perhaps an issue with the voltage in the venue because it didn't do it when I was at home. But last night, different venue, same thing. Our sound tech plugged the amp into a filtered power supply and that did not help.
It does not do it everytime, but will say of a 3 set show, it was prevalent in the first and second sets, but not at all noticable in the 3rd set.
I am guessing a tube problem - just curious if all think I should look to power tubes or pre-amp first?
Thanks very much
At first I thought I was a perhaps an issue with the voltage in the venue because it didn't do it when I was at home. But last night, different venue, same thing. Our sound tech plugged the amp into a filtered power supply and that did not help.
It does not do it everytime, but will say of a 3 set show, it was prevalent in the first and second sets, but not at all noticable in the 3rd set.
I am guessing a tube problem - just curious if all think I should look to power tubes or pre-amp first?
Thanks very much