Where is the so called 'two different modes' for mp3 and lossless on the Teclast X19HD? I don't see it. On the picture you linked, the right side with the STMP 3770 output to headphone, that section refers to the typical infrastructure of normal MP3 players, and not 'normal mp3s' as opposed to FLAC.
The only two different modes I can see would be one for battery conservation and one for 'maximum driving ability'.































