This headphone is ream for about 20 years! And yes my father had bought in 2000 francs at the time, which was enormous. I had the chance to recover.
It works with an electrostatic-dynamic system ....

Very good Stereo headphones in both the sound reproduction in the reliability

Edit of 05/11/2007: With more experience, this headset is not at all suited to the Studio, it is a Stereo Headset for long without listening fatgue. The sound seems airy, softly!
Compared to K141 from the same brand, it lacks power at low volume. The K141 although increases too low, it is more accurate and specific as to listen but also much more tiring, is perfect to detect noise or phase problems in a mix ...