Summary: Perfect audio experience. I have never used wireless head phones because I thought the quality of wired headphones is a lot better. But this Sennheiser RS170 has proved me wrong. So now I am freed from wire and audio quality can still be preserved. There are some minor issues: 1) the headphone is a bit heavy (I have a weak neck) and 2) if you are wearing glasses than you'd better take it off first or the cups may not cover you ears tightly.
Summary: I bought these headphones mainly for use with the TV. I often have difficulty hearing dialogue in movies, which is frustrating. Also wanted them for if my wife goes to bed early. I looked around the net and found a lot of very good technical reviews for this product. I was initially a bit put off by the price. But after finding them a bit cheaper on eBay, decided to bite the bullet. What a good decision. These are fantastic headphones.
Summary: The earphones (leather part) can be replaced, the earphone cord can be replaced (always the first to go), the batteries can be replaced... All the vulnerable parts can be ordered and replaced.. I really like this as I am very hard on ear phones.. The quality of sound is wonderful...
Summary: Very good sounding headphones. 3D logic is very balanced, not overpowering or sounding artificial. Bass boost has a very good balance without sounding boomy. There is absolutely no hiss during quiet passages, during music or movies. RS 170 is great for watching TV or movies. Voice is very clear and background music, especially with 3D activated on the headphones, sound seems to be comming from outside of the headphones. The sound is almost 5.1 quality.
Summary: The performance of the headphone is more than I expected. No hissing in the background and the sound in all level, high or low is crip. However, it seems to be designed for music listening. When I use it to watch movies, sound streaming seems to be disconnected when there is no sound in the background or between conversation. Other than this, I am satisfied with this product.