Mesa boogie dual rectifier wierd noise

[metal666]

Hey,
I have an older, possibly 80s or 90s dual rectifier. i bought it used in 1999 or something so I am not sure. It has had all sorts of trouble,...

[sebagitara]

Hi all, i have a marshall tsl122 combo amp that i bought second handed. Amp is about 12 years old and my bias is constantly rising as the amp worms up but...

[Austin]

After visualizing the power cascode amplifier, putting it together and it actually working the first time I turned it on, I am encouraged enough to try some...