So... if the phone doesnt even have the "Hi-res" in the output menu, http://imgur.com/KKuPEdo it means it doesn't have an internal DAC?
(I've read that Nougats need to try build 704, but i have already followed the opt-in link to become a tester and I can only get build 703.)
and this one http://imgur.com/z5rcbs5 (xiaomi mi mix) means it's using the DAC intergrated in the snapdragon chip? If so, is this DAC any good?