I'm OK with loud music at a concert, but that's usually because I've heard it all before and once I've heard something a few times (and also I had time to emotionally prepare), even at louder volumes its easier to "digest" if you know what I mean. But when I'm at home trying to relax, loud noises and the electronics videos he watches where they'll dissect a motor after running it and such, that motor noise probably gave me a headache.