Bought this initially to use with my Sony Reciever Amp. However, the quality of sound was not as good as I had hoped.

A good looking headset, but found you need to use it carefully. Easy to get scratches...

The Sony MDR-100AAP are a really interesting set of headphones - they're one of the first to boast the HighRes audio tag that Sony introduced quite recently to quite a skeptical world. What exactly "is" high-res audio? We can understand "high-res" in terms of pictures, but what does it mean for sound? Well, let me tell you - it's actually quite exciting. I was a bit skeptical, but when I put on these headphones and played some music from a Sony HighRes walkman I was pretty sold. The bass is so deep, the tones varied - it's something you really need to try for yourself. Don't just read reviews. As for the product itself, it's good - but the quality of the product has a little to be desired. It's not quite as sturdy as you'd hope, and doesn't have that hugely premium feel you expect out of a product like this. The pause button the headphone is a bit weak - but the headphones are very, very comfortable. All in all, it's a good product that delivers in what you want most out of a headphone - it sounds good and feels good on the head. But it's missing that little extra level of shine and polish that you would expect.