Looking to go into the portable from my current desktop setup. I tried doing some searching but alot of the information is somewhat old and i know a few new options have been released since last year. Looking for an amp+dac for iems but would like something strong enough to use at home as well with mid range full sized cans. HD650 would be the most power hungry of them. Price range around $400-500 need something fairly durable as ill be moving it back and forth from home/work as well as outdoor use. Looking for something re-chargable, battery life is less important. As long as its over 6 hours ill be happy, it will be plugged in 80% of the time.