do you have a point of reference, like comparing to another DAP that's less bloated?I found that z1 stock to be overly bloated mid and bass and lack common transparency. At least with my own unit. How does z2 compare.?
these Chinese DAP doesnt have the tightest QC, so I am not surprised if you have a faulty unit, but then again, different ears different hears.
comparing all of my budget Chinese DAPs: Benjie S5, Wallnut V2.1, Zishan Z1; Z1 sounds the best, and there is a bass roll off on Z1 too, not as bad as the Walnut V2.2 but it is noticeable. so I am wondering why your are hearing a bloat in the lower sound spectrum.