I read this forum since a longtime now and after using a lot of DAP I decided to buy the best in order to avoid to wonder each time "Oh what will be the best song if"
I'm in hong kong for business and bought one if you want the address ask me
the price was HKD4800 which means approximately Eur 480 but for that you have a portable Hi Fi DAC, no need to add an amp or something else
As I have a Sennheiser HD 25-1 II I tested it today.
If you want some details ask me