Ah okey, thanks a lot for the info ElectronicVices! Very informative.
I know very little about how speakers, headphones, amplifiers and DAC work but iv'e grown to love listening to music with in good quality/fidelity. So it is the DAC part of my Denon amplifier that makes it sound better..
Wouldn't a Soundkey or Dragonfly Red increase the quality compared to the onboard DAC of the Sony xperia compact 1?
I also have a pair of Beyerdynamic DT 1770 Pro that I use with my Denon Amp at home but Im starting to wonder if the sound out of those would be improved with the Dragonfly Red for instance.. or if the Denon Amp headphone output is as good or better.