oof, this is a helluva long thread.
I'm looking to upgrade from the ATH-M50. I'm considering these since Amazon has them for $300, which is apparently a good deal. I was also considering the AT-AD900X as my first open-back headphones. Driving them off my computer at least for now with a Fiio E17. I listen to a lot of rock, metal, and electronic music. This wouldn't be for super-critical symphonic listening, but I want something accurate. I like powerful, accurate, fast bass. Something that will work with the super lows of Drum & Bass, but also rock and metal.
I'm a little confused, because the reviews of these headphones are all over the place. Some say they have no sound stage. Some say they are super sibilant and painful to use. Some say they're the best thing you can get for $300.
It's not a perfect headphone in stock form. The treble spikes are harsh but can be alleviated with Jergpads and EQ. The soundstage isn't particularly wide for an open can but it has very good depth and imaging. It's great for electronic music. The E17 should be sufficient to drive them.