Just wanted to post some more love for the 440. Just picked these up yesterday, and all I can say is wow! The best cans I've owned before these were the SR60i's, but I ditched those since they were open, and didn't fit my application well (quiet office). These rival those in sound, IMO, with better bass, and a closed design.
I'm listening on my iPhone 3GS and company-issued laptop with integrated soundcard (I know, I cussed, but hopefully this can be a testimony that these can/will sound good in everyday/portable/unamped applications). Listening on MOG, so no EQ settings, either.
-Sound is great. Sparkling highs (but not harsh), good textured mids, controlled bass, good soundstage. I heard someone describe these as 'cold' and that does come to mind a little bit while listening, but it works for me. Maybe they'll warm up some with more hours of play. The bass is there, but not booming. They do seem to roll off some, but that doesn't bother me. I feel like it will come in a little more with burn in as well. These things really seem to shine on electronic music. Maybe the 'cold' nature really helps. But electronic elements in songs are razor sharp and crystal clear, with awesome depth. Really impressed in that regard. Stuff like Deadmau5, Skrillex, and Tiesto really sound great.
-They are a little on the heavy side, as stated. Doesn't bother me as much since I'll be using these primarily at work in my cubical.
-The stock pads are a little uncomfortable. But servicable. I have the 840 pads on order already
-The detachable, coiled cable is sweet. Plain and simple. The coil is great for me since I don't need a ton of cable length.
-If you are looking for tons of bass, look elsewhere. Don't expect these to hold water to the Sony XB series in terms of bass, as stated previously. The 440s are balanced. They absolutely have more bass than the SR60i's, IMO. I like/need bass, but I also HAVE to have the mids and highs clear/crisp...and these deliver.
So if you don't have high end audio sources, don't be afraid of getting these. Another +1 for some great $100 closed headphones!