Summary: Excellent sound quality and acceptably wide sound stage for an IEM. They are close to an over the ear headphone experience.
Pros: I have many Sennheiser IEMs and Headphones and the IE 800 lives up to the expected Sennheiser quality, with one exception (See Cons).
Cons: My upper cables are beginning to harden after only 1 month of use. A number of Head-Fiers have this same complaint. Given the upper cables aren't replaceable, this can become a headache if they crack. Then you're periodically sending them back to Sennheiser for warranty replacement (up to 2 yrs, ...
Summary: I have the Sennheiser IE80 but wanted to try the IE800 to see if they were really all that much better. As it turns out they are. The IE800 has a smooth balanced sound signature from the base to the highs. The sound is 'clearer' than the IE80's as well. I love the fit, too.
Pros: Smooth and balance sound; excellent separation; small and comfortable
Cons: Cord a little short; cord microphonics noticable when moving around
Summary: Just a few notes to qualify some of the ratings that would not be obvious: The highs are so strong (more than HD800 I think) that I can only give the IE800 a six. Soundstage seems OK to good for an IEM, but not unusual. Portability is good in the sense of size, but the carrycase design is fiddly.
Summary: I have been listening to these for about a month now. They sound great. As good if not better than people have been writing about. I don't have a problem with the cable length. I am 6'2 and put my phone in my jacket pocket. I don't seem to get hung up with doorknobs and the like.
Summary: Love them. Read a number of reviews and it was between these and the Shure se846. The Sennheiser's went on sale and I jumped right on them. The only really complaints I read about was about cable length and microphonic noise. To me cable length is fine I use this in a completely listening mode I.e.
Pros: Size Kevlar cable Sound quality
Cons: Noise isolation on plane ... again very minor issue. Didn't like case that came with it ... too big. I'm using a smaller case that came with my older Westone's that way I can carry in my pocket.
Summary: Excellent top to bottom, ultra-smooth with no peaks, dips, or roughness. Strong bass and treble, but very high quality. Some IEMs have difficulty producing the very deep bass below 25 hz clearly - the IE800 does it with ease. Most comfortable IEM I've ever used.
Summary: After seeing these masterpieces I sold my house, my car and my kidney and paid the rest on loan. Now I'm a proud owner of a pair of headphones, preferably IEM's. My story may sound absurd but trust me the headphones sound great and as the saying goes, music is life these headphones do a great job by...
Summary: Upgraded these from ie80 and the difference is night and day.. ie80s were good to start with, but these are just on another level. So crisp and clear detailed in sound. Slightly high on bass though but i actually like it that way. I cant put these down amazing sound and comfort.