Pros: imaging,soundstage,detailed high,mids and lows,smooth,comfortable
Cons: unforgiving on poor recording or wrong equipment.
The HD800 is my first expensive headphones.
its really comfortable to wear it and sounds great through my Fostex HP-A8.
the treble is smoother than i first thought it would be but its still considered an bright and detailed headphone. bass is very neutral and punchy and mids is also very natural and uncoloured in my opinion.
some people may find it too bright or not enough bass when paired with the wrong amp.
the best part that i find with the hd800 is its imaging. i feel like band is playing in an nice big stage in front of me and every instrument is seperated and can be heard easily.