The Sync by 50 Cent are a great set of headphones with some unique features. Compared to the similar Bose and Beats models they are significantly more expensive and do not feature the “active” noise-canceling option that the competing models do. They do however offer a killer wireless audio transmitting system that is unlike anything on the market right now. At this price point, you should expect “active” noise canceling.
Overall, these headphones are great and a quality product, but if you are not needing the wireless capability I suggest spending your money purchasing the Bose Quiet Comfort 15s or Beat by Dre Studio headphones instead since you’ll get the same superior sound and build quality found in the Sync by 50 headphones as well as having the ability to utilize “active” noise canceling features.