Seemed to work fine at first, although not comfortable to wear (too tight on the ears), but just after about a week the sound from one of the sides started flickering away, eventually to disappear completely

My previous noise-cancelling headphone gave me rather dull sound when noise cancelling was turned

The sound is poor without noise cancellation and even worse with it on

I didn't expect too much on it since I just want a wireless phone, but it did really surprised me that the sound is even better than my old one

Excellent stereo sound.

I am not an audiophile, I'm just an ordinary mortal, for me the sound is fine and the noise cancelling is really good.

But great sound and canceling.

I am by no means an audiophile, however the sound in my iPhone headphones seems richer, more clear, and has better bass

10 yrs old sony earphone has much better sound.

not crisp and clear sound but muddy and muffled sound.