Here is a video clip explaining the method I use to tame “tweed disease”. You techs that are watching this you probably already know what tweed disease is and how to tame it in a vintage amp or brand new build. For those of you who are new to building amps doing the DIY thing this tip will help you with this anomaly. Tweed disease is that crackling sort of noise you hear on vintage amps and can occur on replica type builds. Check it out.