I snagged a set of these during the F&F sale.
Listening to streaming audio at work; The noise cancelling is effective as a don't hear the screech chicken next to me on the phone at all. Musically they are the nicest ear bud style phones I have ever listened to, and have very rich bass. I have them plugged in to an Audioquest Dragonfly, and I must say they sound good enough for the rare occasions I listen to headphones... I will try them with my smartphone in the near future while I am cutting the grass to really test the noise cancelling feature.