Thanks. Please let me know if you notice same issue. I still have 5 days left before I can return and get replacement.
It does not even play some of mp3 or mp3a files. It shows "NULL".
i'll be loading the sd card and trying it out later today - let you know. i'll be loading both flac's [classical and jazz] and 320bps mp3's [pop].
I loaded a bunch of old mp3 files I have never used from 2 different iRiver H140's I got a number of years ago.
They all load and sound fine. I can go into the albums either by Album access or Directory. It all works. They sound pretty good also.
There is the case if I don't like the sound signature of the internal amp and would like to by-pass it. That is when I would like to connect the LO to an external amp. For me, an external amp would be something transparent and neutral to let the DX90 DAC shine.