Sennheiser, a leading manufacturer of studio and stage microphones, created a limited number of what have been called the best headphones in the world - "The Orpheus". That’s right, only 300 of these headphones exist—possibly because they’re handmade. The set includes a high-end vacuum tube amplifier with an all-valve signal path and equally high-end electrostatic headphones with gold connectors.
The most expensive headphones in the world originally retailed for around $15,000 and can still be found for less than $30,000. Of course, if you plan on hooking them up to your iPod, you’ll need to leave the amp at home.
The Orpheus is primarily famous for being (still) the most expensive production headphones to date. When launched in the 90's, it represented a strong statement by Sennheiser as a premier headphone manufacturer.