Good audition, not many basses, but the frequencies are equilibrated. The problem comes from the plastic parts. When the headphone moves, it creates many squeaking and creaking, gnashings.... unbearable !

I have just bought the latest incarnation of these excellent headphones, MDR-D66. Much the same as the awsome D55, but the padding around the ears is a lot softer, making them even more comfortable to wear, and the major benefit, letting very little sound out. I've compared them with the D55, and the difference is quite significant. Much the same headphones apart from that, shorter cord to allow for remote of an MD/CD walkman. These headphones cannot be beaten for portable audio sound. You pay for it, but as always with sony, its worth the extra.

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MDR-D55

I like this head phones bicouse,it is made for digital audio it sounds veryvery very exelent,I just recommend this headphones to anyone.

Sony makes the best low/mid end headphones, hands down.