Oh, sure -- you've got at least 893.1 options (at last count, anyway) when it comes to noise cancelling headphones for your iDevice, but do any of those plug directly into the dock connector instead of requiring a separate battery? Exactly. That's the claim to fame for Blackbox's i10, a new set of earbuds that rely on power from your iPod or iPhone in order to achieve that active...
SCOSCHE IEM856M Reference In-Ear Monitors with tapLINE III Remote & Microphone (White)
Active Noise-canceling Earbuds Actively Eliminates Up To 75% Of Unwanted Noise Includes 3 Comfort Fit Silicone Inserts Convenient In-line Control Hub Houses Noise Cancellation Circuitry Includes 1 Aaa Battery Includes Iphone (tm) Adapter, Airplane Adapter & Carrying Case