Two products mentioned in your guide, CEntrance DACmini and Fischer FA-002W HE seem very interesting.
But, “One of the things I learned early on is that the “characteristic sound” of the FA-002W tends to be somewhat more amplifier-dependent than is the case with some other headphones in its price class. On paper, nothing would suggest that the Fischers are difficult to drive, though their impedance rating of the High Edition model is higher than some, but in practice they worked significantly better with some amplifiers than others, meaning it will be worth your while to spend time finding a good match.
Two specific amplifier recommendations would be the Burson Audio HA-160 and HiFiMAN EF-5, both of which gave great results with the Fischer headphones.”
I am wondering if the CEntrance DACmini can give great results with the Fischer FA-002W HE.