@SynekPablohi,happen to find your reviews so minute&professional!! my axon 7 had just degrade to andriod 6 from 7,in order to enjoy better sound quality.but then i start to confuse that why the variant display shows 'snapdragon pcm',instead of 'direct hd'(in andriod 7 it was)??i can feel the sound improved now, by the way.