I got my Denon D400's today in Hong Kong for the nice price of $2380 HKD which is about $300 US. I actually wasn't intending to be buying a set of headphones today but when I auditioned and saw the price I couldn't resist!
Initial impressions are very good, the bass has a 'kick' to them that tickle the eardrums. Compared to the Sony XB-700, this phone has much faster bass that punches, but doesn't seem to go to the very lower octaves that the XB700's do.
Highs seem very nice, no sibilance at all. Vocals are more forward than on the XB700's and slightly more laid back than on the D5000's.
Midrange is definately recessed, but not as much as I would have expected for a bassy headphone such as this.
The blue glow on the side is tacky, and there's no way to turn off the LED but you can dim it, there are 4 levels of brightness. The right knob is turnable and clickable for control of the ipod/pad/phone, although it doesn't control my android phone :(
Comfort is great, the pads are very plush and the clamping force isn't too excessive, but then again I have a small head! Isolation is also excellent.
Here are some unboxing photos, and I will do a short and amateur review once I burn these in for a few days.
Edited by Viper2005 - 8/14/12 at 10:06pm