Pros: Isolation, durability, spl
Cons: Tiny soundstage, Dark sounding, not very much detail, very uncomfortable
I have had these headphones for a couple of days, and used/tested them intensely during that period.
I have a pair of mackie mr8 mk2 studio monitors, so this is the sound I am used to.
The sennheiser HD25-1 II are extremely populair, and this is one of the reasons i bought them, yet I was not satisfied at all.
First of all, the sound stage is extremely small, it actually sounds more like everything I was playing was in mono instead of stereo.
Also the headphone lacks in treble, and really does not have a lot of detail, this headphone is everything but balanced, so to call this a studio headphone is just wrong.
Don't get me wrong, it sounds good, has a lot of tight bass, really upfront (could be your taste) and goes really loud. And maybe if you are a pro and need a headphone that is built to last, and has an extremely high spl this is the headphone for you.
Otherwise, I think the headphone is a bit expensive.
Alternative: I have the beyerdynamic DT770 pro, these are closed, don't go as loud (as if you would ever need 120db in your ears), still more than loud enough though and have a huge sound space. Also I got them for 130 euro's, so that's 10 euro's cheaper than the sennheiser 25-1-II.
The only downside to these headphones is that they are quite a bit bigger than the sennheiser's 25-1-II.
Some people act like this is the best headphone in the whole world. With this review I am trying to tell that the 25-1-II really is not the best headphone, and that there are a a lot of alternatives.
I actually have bought these headphones again, and love them!
My main headphone is the HD650, and I use the HD25-1 II for bass heavy music, portable uses and playing the drums. I actually don't mind the small soundstage for some reason, and love the sound.
I bought the velour pads for extra comfort, and the fiio e6 for portable uses.
Not sure if my first pair was falty or that my sound signature preferences has changed.