The whole skullcrushers idea is a load of crap, I want to hear my music not something that sounds like godzilla takin a shit. I dont want a fucking microphone in my headphones blocking shit either. I just want something that when listened to at a relatively high volume cancels out a reasonable amount of engine noise so I can hear my tunes, my own thoughts, and a little bit of the tractor because I need to hear what I'm doing. Right now I'm using earbuds under the jobbies we use when we sight in deer guns. I can hear the loader to an extent (so I know if the blades are engaged or not) but I can hear my music without a 1000 watt sub on my head. I think I'll get similar performance from a set of around ear, sealed headphones.