I convert all DSD ISOs to 24/176 flac in Foobar before transfering to my 901, saves all the messing about.
I have compared DFF to 24/176 and for some reason the latter sounds better, I guess it gives the 901 less to do
I dont get the deal with dt1350s comfort. I have a massive head and wear specs.
The metal frame bends easily and dont pinch, especially after a few weeks.
I still rate them as the best sounding truly portable, seconded by the Vmoda XS.
The Senns all sound rolled off to me and/or bass boosted as did the M3 and T51p
The 1350 to my ears has the most accurate sound.