Logitech's UE 900 Noise-Isolating headphones incorporate four armature speakers per ear, three-way crossover, and superior noise isolation to deliver pure, undiluted sound. For complete convenience, you also get two detachable cords - one of which has a built-in microphone and controls for music and calls.
Key Features
Studio-quality quad armature earphones
Wide, detailed, and immersive soundstage
Includes eight sizes of ear cushions
Two detachable cables for music and calls
Made for iPod, iPhone, iPad
These headphones have been discontinued by UE. Beware there has been some QC issues with these that a quick Google search will reveal.