For the outlay you really shouldnt be having to mess about with a app to basically 'Fix' them.
That's why I paid £100 less than a new pair. And also why the new Solo 2's have had the sound altered to improve the upper end of the frequency spectrum.
Sure, the Solo HD's are a bit shonky sound-wise, which is why I wouldn't suggest anyone buy at full price, but, and this was the point I was trying to make, the phones themselves aren't too obtrusive, compared to some over-ear designs, are pretty compact, and the sound can be easily and cheaply fixed via software if you pick a pair up cheap.
I've auditioned B&W 'phones, both the P3 and P5 models, and I wouldn't pay £160 for the P3's, and certainly not £250 for the P5's, my £70 Shure SE215's knocked spots off them*! That was using my own player with music I was very familiar with.
*IMHO, opinion, of course.
Certainly there's a 'style' element to them, who wants to wear something really ugly, that causes small children to point at you and laugh! I was wearing mine the other weekend walking through a local park, and this lad with a skateboard said "like the Beats!" Which made me smile, I'm sixty this month!