I have to throw a "thumbs up" out to this noise-reducing headset
I ordered them from Amazon a few weeks ago and tried them twice while mowing the lawn....once while listening to some good weekend NPR programming and once while listening to MP3s. It's really nice to barely be able to hear the mower and listen to stuff that doesn't have to be cranked to hear OVER the mower. The sound quality is perfectly acceptable.
I don't like the little radio tuning knob, but I don't change stations much and will likely continue with MP3s anyway.
Plus, I look all professional and stuff when I use my backback blower!