Harman Kardon NC

Conclusion The Harman Kardon NC offers excellent sound quality for a pair of noise-canceling headphones, with an impressive fit and finish. This model arguably sounds slightly better than the Bose QC 15 and Audio-Technica ATH-ANC9, two other $300 noise-canceling models. It also offers the advantage of having a built-in rechargeable battery and includes an inline Apple-friendly three-button remote/microphone for making cell phone calls (Bose doesn't include such a cable with its QC 15s)

The Harman/Kardon NC are well-crafted, well-rounded headphones that sound great, deliver decent noise isolation in noisy environments and are comfortable enough to have on the head for hours. They will not disappoint, even though they struggle a little with treble reproduction.