Well it's been quite some time in fact, I had been "given" the headphones at the purchase of a Yamaha piano of the silent series. Well I soon tired of the silent, but not of the headphone

This is a good headphone, fairly linear, good insulation, however, after some hours you start to feel the ears ... it's a shame it is in overwrite mode and not in-ear contour which would have been more comfortable ... As a note against the player with the bridle when used on those with this adapter, I think because of the impedance, the noise level is quite low (at least lower than with headphones designed for that ) which means when in loud places (train, car eve ...) the noise level is not sufficient enough (for me). But it is not within this framework that I use it.

Thank you all @ +