I have owned my PA3 for almost a year now with zero issues, the sound quality is sublime imho paired with my old B&W DM600 SE3's, of course it only sounds as good as your source and that would be a schiit modi 3+ dac into a Schiit magni heresey (via a loki mini+) and boom FLAC/HD Audio sounds absolutely flawless.
Definately a case of 'it isn't all about the numbers your fancy pants analyser tells you, but what actually sounds good'.