I'm looking for a portable system for HD650/800. I was considering HIFIMAN 901, but it's out of stock in Japan for quite a while. Besides, as a portable player, it seems like 901 is still not very enough for HD650.
I was suggested to try HIFI-M8, but still, it's not available in both Japan and China.
Now, my candidate is Sony PHA-2, which is not yet released. I'm wondering the performance of PHA-1 with HD650 and HD800. Can someone give me some advises?
I'm open for any kind of suggestions.
Thank you very much.