Check out this uber epic thread. This is sheer awesomeness on a whole new level.
Oddly, DavidMahler doesn't seem to like the TH900 that much, rating it even lower than the HD600. He seems to prefer HD800 > LCD-3 > HE-6 > LCD-2 > HE-500 > HD600> TH900, in this order.
Having heard all of the headphones above (and owned most of them), my personal ranking would be TH900 > LCD-3 > HE-6 > LCD-2 > HE-500 > HD800, assuming they were properly amped.
1. The HD800 is, technically, a superb headphone with a massive soundstage, but it sounds too analytic and doesn't work well with a wide array of genres. That's why I prefer the T1 to the HD800, despite the former's relatively closed sound.
2. I completely agree with David that the HE-500 is one of, if not the best headphone value-wise. The LCD-2 and the HE-500 are a close tie for me, although I slightly prefer the LCD-2's organic sound and superior bass.
3. A lot of Head-fi'ers don't seem to appreciate the HE-6 because of its low sensitivity, but it truly shines with the right amp to kick its butt. Burson Soloist and RSA Dark Star are good examples, but from my experience, the ultimate way to enjoy the HE-6 to its fullest potential is to drive it in balanced mode from speaker outputs of a high-power integrated or power amp. Believe me, you can get a totally mind-blowing sound with an integrated amp at only a fraction of the Dark Star's price. Until then, you ain't heard the HE-6. The HE-6 has the highest scalability among all headphones I've auditioned, even higher than the HD800 IMO.
4. I thought the LCD-3 were my numero uno greatest (ortho-)dynamic headphone of all time, until I've heard the TH900. That being said, I once again agree with David that it is the king of bass, the epitome of how a dark-sounding headphone should be designed. Because of its dark sound signature, it excels the TH900 in certain genres. If it were a tad more comfortable...
5. The TH900 is my most favorite dynamic headphone so far, albeit a closed design. It's really a close tie with the LCD-3, but I found the TH900 to be the one headphone that works wonders with virtually all kinds of music. I definitely agree with David that the TH900 in regard to its bass, imaging, comfort, and the fact that it's the "genre master." However, I do wish its mids were a bit more forward, the sound more wide and open (although this is possibly the best soundstage a closed headphone could provide), and had a higher scalability so that I could improve it even further with a decent amp.
Considering that the LCD-3 has a higher scalability factor, and the fact that it can also be improved by rewiring an aftermarket cable, an LCD-3 rewired with a crazy-expensive cable like DHC Spore and balanced driven by a uber amp like Apex Pinnacle may sound better than the single-ended stock TH900 with the same amp, from a purely sonic perspective. However, in most cases, I would pick the TH900 for most of my everyday listening.
Edited by songmic - 11/1/12 at 2:54am