Disclaimer: This review is written from my perspective as someone with a mid-fi DAP looking to upgrade. Your mileage may vary.   Over the years, my DAPs grown in size and capability from the Sansa Clip, to the original Fiio X3 and now the iBasso DX90. I found that I enjoy the signature of Sabre chips very much, in particular the speed and detail oriented nature of the sound. Some may find the Sabre to sound ‘cold’ but I find it enough for me. I pair the DX90 with JH5 pros and occasionally the Sony CD900STs. I also have the Dragonfly V1.0 which the...