That's really not such a bad idea, with the exception of blowing somebody's ear drums out of the back of their head. In concept, since everything is digital it wouldn't be hard to develope a generic, across the board mute button. Perhaps the part of being across the board is a stretch but if one knew the type of car the stereo can be cross referenced by computer or even have SIRI look up the proper "fix" quickly unless of course the stereo is a customized job. Then.......oh just a minute! A freq finder for feed back! Now ya got me thinking Will! We do not have to make it explode or even mute it but cause a heck of a lot of feedback using their own output. Could work. I'll do a little research and talk to a couple of buddies in a think tank I know of. There should be a HUGE (Trumparian slip) market for such a gadget. I hear investors calling already...........sweet!