Tube Amp Archive

Tried it again today both with batteries and the one-spot power supply. Everything is behaving normally. You could be right Mike, some sort of ground loop causing random problems, or I'm in an electromagnetically noisy environment? I'll keep an eye on it. This is my first amp build so I don't know i...

Thanks for the replies. I'm powering the pedal with a one spot cs6. Quite far from the amp. The weird thing is it's only when I switch on the boss od3.

I've recently built a Blackvibe 6v6 from using a schematic from Rob Robinette's website. The amp sounds great but I notice that my overdrive pedal adds noise which is coming from the amp, not the speaker. I'm aware that transformers create an unavoidable hum, but should this get louder when using an...