The Sennheiser HD 700s are open-backed audiophile headphones, which—you guessed it—aren't cheap. But if the company's legendary, top-of-the-line HD 800s were always in your sights but out of reach, the HD 700s might be exactly what you're looking for.
Sennheiser HD 700 headphones have a 40mm driver and an open-backed design which produce cleaner, distortion-free sound than their closed-back peers. In short, these headphones are a scaled back version of the HD 800s in everything including price. The HD 700 costs $1000, which might seem steep, but it's $500 cheaper than the HD 800s.
Sennheiser has also cooked up a new set of cans for the common man. The Amperior headphones are a tweaked version of the company's popular HD 25 DJ headphones—you get the same aluminum finish but with an added in-line microphone for making calls with iOS devices. They've also got very low impedance drivers so that they'll play equally nice whether they're plugged into your iPhone or a DJ mixer.
There's no word on price on the Amperiors yet, but both they and the HD700s will be available this March.