Originally Posted by sharpie007
I had the momentum's for a couple of weeks. I returned them because I found that the noise isolation wasn't very good, the sound was too "forgiving." The bass, while present and powerful, felt slow and almost echo-like to me. Also the soundstage was fairly small.
This isn't to say that they aren't very good headphones, and they look stylish as well. It's just that to me they seemed to bring poorly recorded tracks up to a better level and higher quality tracks down to a lower level at the same time.
They were also, imho, useless when trying to remix. The bass response is just too slow for me. I couldn't tell when a track was slipping until almost too late on more than one occasion. I have no such problems with the K167's.
I have had the K167's for 4 days now and I immediately noticed the high frequency detail vs the Momentums. I can also hear suble things more clearly (eg on recordings you can hear fingers sliding across acoustic guitar strings clearly and you can even hear the rebound off the bottom of a snare drum on jazz tracks). I guess revealing is a word you could use to describe them.
Of the headphones I've tried recently (and there have been some dogs), these are the most open, revealing, and comfortable. The sound isolation is great, I can drive them off portable devices. Most of my listening is done off a Macbook (native sound card), a Behringer mixer or a Hercules mixer. I can't notice an appreciable difference between the headphone out on the behringer vs the macbook.
As others have posted here, the burn in is dramatic. My first reaction was "great highs! Where's the bass??" But after a couple of days using and burning, the bass is very present, and as I said, really tight. This headphone is a winner for me.
I may get K267's eventually, but I'm really happy with these right now.