For all bluetooth lovers - you just miss the point. This player(and other Plenue family players) has exceptional quality DAC and circuitry (no one can compete with Cowon in specs even when using same DACs).
But when using Bluetooth, the audio is transmitted in digital form to your wireless headset where it's finally translated to analog by your low power shitty headset DAC. So the whole idea of high quality analog signal is defeated.
And don't forget that some part of the digital signal is lost due to lossy compression (insignificantly if you do have aptX/LDAC on both sides, and very significantly if you don't).
Bottom line: if you want Bluetooth - use your phone, you don't need any audio player at all.