When I first heard about the Fiio X7, I was so excited.but unfortunately, my excitement faded soon after purchasing one.build quality and design is great, but the interface is full of bugs and I get lag just by scrolling.google play service has stopped warning appears about every minute.numerous firmwire issues .can’t downgrade to a previous firmware version.stopped being able to play 5.6 DSD files with one firmware upgrade.noise with wifi connection making streaming music impossible.also there is an issue with the wifi is the wifi antenna shielding was done improperly.it’s charging time is more and display quality is very poor.