I am researching a new hi-res DAP candidate. My first dap is the Sony NW-a55 and Sony music center is really convenient for transferring music into the player. Later I obtained a used Ibasso dx160 and planned to retire my Sony. However I find out that I cannot transfer file by 1 click anymore...

I would like to know which small DAP would work with my current music folder: It has some 32000 Files (MP3, FLAC and a few DSD) and the size is 350GB. I use Sandisk Ultra 400GB microSDXC cards for my music players (Windows tablet, LG Smartphone and Fiio X1). Now I would like to add a DAP as...