Pod HD Pro giving off Hum and Feed back! in POD HD Posted December 5, 2015 "humming" and "feedback" are bad words to describe that sound. Both of those words refer to rather specific sounds, none of which yours is. Yours just sounds like a poorly built signal chain with some odd effects messing things up - perhaps a reverb or delay. As /u/DunedinDragon said, I'd just start turning off effects one by one. Also check your amp for effects, reverb, etc. If you're using a pre-built effect that came with your device, then don't. Build a new one from scratch to understand better how the effects relate to each other (The prebuilts tend to be pretty awful anyhow). In other words, it doesn't sound like anything *wrong*, it just sounds bad.