Hi, I recently bought the device to see what its based on. I posted the pictures at http://www.rockbox.org/wiki/SonyNWE390 and as you can see it is based on the RKNanoD. The fact sheet of the RKNanoD (see attached pdf at http://www.rockbox.org/wiki/RockChipNanoD) claims to have a 24-bit/192 kHz...