I LOVE how this thing sounds. Love it. I dislike, even hate the quality of its screen, the time it takes to transfer files, its lack of real gapless, its idiotically sharp corners. ETC. But I love how, when you get it going, it sounds very good. I'm a big WM8740 fan. In many ways, I think it is THE AK DAP to pair with outboard amplification if necessary. It is largely more stable under line level voltages and it drives earphones and headphones well.
Oh, and
here are RMAA results of the AK Jr driving representative earphones and headphones.