Interesting comments regarding the E12. I do think the X5's headphone out is actually quite pleasant, maybe a bit easy on the treble reducing the details. I'm currently running X5 --> iBasso PB-1 --> Mad Dogs (balanced). It's a really good set up for portable use. Really digging my X5. Really 0 issues except maybe one freeze so far.
8/29/14 at 10:18pm