although Sony m 'has particulèrement disappointed with his players or DVD recorders lately I must admit that for this headset, Sony is very strong. it's finally worthy of its J AI REVE slogan IN THE SONY DONE. for a price quite affordable (but subject to strong fluctuations, be vigilant), these headphones really deserves the label HIFI. many complain of too much bass presence: I do not understand this view. because for me, headphones, HIFI in addition, m must offer the same performance as my enceintes.et believe me, despite my high expectations, I am fully satisfied as low as firm, round, fleshy without being exaggerated, I n 'had not heard for a long time ca. However, I find the voice a disembodied hair, but that is not what bothers me particularly. similarly, the high frequencies are reproduced well, not drowned out by the bass. this al generosity advantage of providing a better impression of depth and spectrum width sonore.j 'really the impression to discover details about my cd sound yet heard thousands of times over the years. BRAVO !!! its sensitivity is exellent: compared to my helmet up fetish Technics, I can reduce the volume of one third while having the same power and loudness to the ear. power seems to be unlimited: neither I 've been able to turn up the volume so high until almost unbearable to my ears without incurring annoying distortions. add to that a significant comfort due to its good soft pads covering the whole of the earpiece (but s' soaking sweat quickly what makes them slide slowly), and you have a really perfect helmet on the line. the only downside is the short length of the cord (1m20) but with an extension to 5 euros max on this website, you can completely then plug it into your hi-fi amp or platinum cd favorites. because this is really about this material, not a hyper compressed MP3, that it fully delivers its full potential. really, I'm amazed by the quality of this headset. it's simple, I give him 9.75 / 10 on my demanding quality scale. I wonder, moreover, if I will not recommend another as long as it is available, because if my current know has had some failure, I would find myself very annoyed and frustrated.