I would try to get a listen if I were you. I’ve had a number of A&K DAPs and every time I have soon upgraded to the point where I’m at the AK380 but still tend not to use it so much - even with the add on amp. My old iPod 5th gen and Ponoplayer get much more use: the Pono and a pair of HD600s is s wonderful pairing that just majors on making music.
Another possible approach is to use a (portable) DAC as a headphone amp, such as a Chord Hugo or Mojo.
The Hugo was a popular choice as a fixed DAC in a HiFi system as well as being a great portable device for headphone use.
Using a DAP might require more careful headphone matching as the amp in it may be less capable with demanding headphones. Many users will run them with IEMs which can be great if you want a compact portable setup, but less than ideal with many full blown headphones.