intlsubband
500+ Head-Fier
I was looking for a good portable over-ear to go with the dx90 and I can strongly recommend the NAD Viso HP50. I got it today and have put about 4 hours into it by now. It's a very efficient headphones and doesn't require an external amp to sound its best (before this I was using the mad dogs, which required my e12 to sound well). Brilliant combo.