sudomod

I've done the Pwm audio and filter and have a high pitch hissing sound on my audio. In a quick play around I noticed when I touch the 25v 10uF capacitor with something metal (like my tweezers) the hiss stopped.

Before I start redoing everything to fix, and possibly switch to usb audio, is there something simpler I can do here that this is signifying?

try ad to config.txt

Yeah I've put that line in, made no discernible difference