Koss ESP-950 Electrostatic Stereophone

Audiophiles seeking the best headphones money can buy should definitely consider the Koss ESP-950 electrostatic stereophone. The headset uses state-of-the-art electrostatic transducers rather than the fiber cone drivers typically used in headphones and loudspeakers. These transducers operate on currentless electrostatic charges with push-pull capacitor plates to induce movement in an intervening, low-mass, semiconductive diaphragm. That's a technical way of saying that these ear pieces are highly sensitive and very responsive to minute fluctuations in audio, rendering your music with delicacy and warmth, and with microdynamics--tiny fluctuations in the musicians' output level--intact. The stereophone uses a soft, vinyl closed-ear design for sonic isolation and includes a battery pack, a leather carrying case, connecting cables, and a 120-volt AC adapter.

Owner Reviews, Ratings, Comments and Criticism
I bought this from Amazon in November and it went kaput in December. I since sent it back to Koss taking them up on their lifetime warrenty. I recieved a free new energizer unit. This headphone is excellent (and I own many of the top brands); Use it with a tube headphone amplifier to get best results.