Yes those B&O aren't bad sounding and compared to all other clip-on/hang-on/rest-in ear buds out there these are actually adjustable and comfortable.
But.. un-amped there is only one king, the sennheiser HD-595.
The 595 might not be perfect, but never have music been so enjoyable on my laptop, from my mp3 player, portable dvd etc etc. For the price (remember no amp) it can't be beat.
It's like sennheiser has found a golden middle compromise. There is no big flaws to distract you from the music. Very homogenous.
No hollow can sound, no boomy uncontrolled bass, no sibilance out of control.
They are forward, but not Grado 'feel the spit from the vocalist in your face' forward. Compared to the HD600 20'th row in the back, they might be row 3-4.
The midrange is the best area. Voices never sounded better. close and detailed. These are also the headphones that reveal easiest artifacts from compression
but unlike most phones they don't carve your ears out with them. So it's no problem enjoying a less than optimal mp3 or streaming radio.
Some say it lacks bass, but that's not true. It's just very well dampened, so they don't reveal themselves with Mmmm Mmmm resonance after every impulse. It's deep, punchy and clean.
I'd kill to have speakers that sounds like this. Sometimes the bass even scares me, like it appears without warning. Watching dvd's with a well mixed soundtrack on these is a blast.
They are comfortable and not too big either. Okay since it fits around your ears they are large phones but not like the K701 (OMG!)
I easily bring them with me on the bus, the train, the plane, at work .. anywhere except when I'm on my bike.
I must have spend something like 3000dollars on headphones over the years. the 180bucks HD595 set me back was well worth it.
It's now my favorite together with AKG K701 which must have an amp and costs 2-3 times more.
for more rants like this go visit the head-fi forum:
http://www.head-fi.org/-Pusle