I've been wanting to upgrade from my fiio e7 (not K) for a while now.
Only reason i got it in the first place (instead of, say, the e10) was because i wanted to use it with both my laptop and android phone... but apparently the galaxy nexus has issues with digital out being very noisy.
I've been considering getting something the likes of an ODAC or Gamma 1 lite, but a friend told me that it might actually not be that big of a step up from the e7.
Instead he recommended something by HRT or the dragonfly.. but honestly these are a bit over my budget, unless i can find them for a reasonable price on the boards.
My budget is around $100 (i can stretch it a bit to $150 including shipping).
I prefer to get a complete device but i'm not afraid of diy if i can get a full kit.
I'm looking for a portable usb-powered dac which i'll be connecting to my mini^3, so a headphone amp section isn't necessary.