What headphones are you listening to when you are comparing sp2000 to wm1z? Do you have them volume matched? What music are you playing? Do you have the latest fw on each DAP? How many hours have you spend doing a/b comparison of these daps, side by side, blind testing? And how many burn in hours do you have on your sp2000?
Every single DAP mentioned in my review I have in front of me, with the latest fw, playing the same track, volume matched using U18t for monitoring, with dozens of hours I put in the last two weeks testing and comparing them.
Just because you don't agree with my review, it's just your personal opinion and how you personally hear this comparison. But I would like to know, for a full transparency, under what conditions you reached your conclusion? And the most important question, how many hours of burn in do you have on SP2000? I received my review unit with a few hundred hours on it. And most of the people reported a noticeable sound change, going from cold analytical out of the box to more engaging with a smoother treble after burn in. Will wait for your reply with the answers
Or perhaps you are working on your own review? Would like to read that as well.
PS I'm just sharing what I'm hearing, of course it's subjective, but I do enjoy doing that since over 26,000 "likes" in our community found it useful