Silver Supporting Member
I'm trying to understand a suggested modification to my amp, a Fargen Blackbird. I've been told that running the AC to the Phase Inverter filament will improve the sound quality of the amp. But I thought that the Preamp section already ran on AC, and the power tubes, via the rectifier, on DC. I'm not very knowledgeable about how the power supply in an amp works, but want to understand what I'm asking my tech to do when I ask him to make this change. Is this a simple mod, or would it take some time? I'd appreciate any clarification you can offer.