Well, better to hear it from you guys than learn the hard way. Is that particular to this set of headphones, or are nicer, open headphones generally considered too fragile to carry around everywhere?
I'd be very interested to hear what your results are like if you do this. I'm trying to decide on an amp (still thinking portable, because even if I'm not taking them outside, it would be nice to use them around the house without being tied down to a power outlet and computer), but I'm having trouble finding info on what audio features different amps have specifically. I've heard that the O2 is a better amp than the E11 for instance, but not what part of the O2's performance is better. And I'm not too keen on paying the premium without knowing why.