I'm not an audiophile by any means, but for a $50 pair of bluetooth headphones they sound really good. They have a decent amount of Bass (which I really like) and the noise cancelling feature works really well. I have 2 pairs of these and haven't had any issues with the sound being fuzzy or tinny or muffled.
It's actually pretty good in my opinion, I love the bass. I've had mine for less than 6 months. The great sound quality gives you an immersive feeling when you are watching movies or listening to music with people you love. Can’t complain.