Hidizs AP60 Digital Audio Player

With the latest and previous FW update my AP60 as transport (via USB OTG) to the Xduoo XD05 have variable volume control ! Do you guys have the same issue ?

Same reason people still buy DSLR cameras and 4K camcorders, better performance. Those of us who have invested in higher end headphones/earphones appreciate the better audio performance from the dedicated high resolution DAC and more powerful AMPs. Most people are satisfied with the standard smartphone audio, others want something more to compliment there more costly gear. So either a standalone DAP (digital audio player) or one of the few smartphone that actually offers high quality audio output.