Flagship portable players comparison

Ultimate DAP flagships brought together in one review Lotoo Paw Gold — https://www.youtube.com/watch?v=AO7LrQZrhXE A&K AK320 TheBit OPUS#2 — https://www.youtube.com/watch?v=Yl1DooY0Esk Questyle QP1R — https://www.youtube.com/watch?v=9r77kXThLz8 iBasso DX200 — https://www.youtube.com/watch?v=FPnK43NwKdg also starring Fiio X7 — https://www.youtube.com/watch?v=lV7cR-Hw-jk Music by Kevin MacLeod (incompetech.com)