DiMarzio SilverAudio Headphone Extension (15ft)

A nice step up from the Grado extension, this cable is clean and articulate in comparison. On the other hand, it's slightly grainy in comparison to the more expensive cables, but perhaps not excessively so given the price jumps for some of the more high-end extensions.

This silver-colored cable uses Neutrik connectors on both ends, with a locking feature on the female end. The SilverAudio extension is extremely well-constructed for its price. Also available in a shorter 10ft length.