Like I said above, I've had months and months of experience with these units, and only had a handful of issues with them. As many design changes as they've made in such a relatively short period of time, there's bound to be a few units that fall through the cracks. It sucks to be the owner of any kind of malfunctioning equipment. Good luck with getting your issues resolved.
]]>Latest firmware and reported to Fiio support along with others I see on their forum.
]]>I still use my X5III, and with all the firmware updates installed, haven't experienced any of the issues you describe. I think it's a great player, and the newer models like the M9 and M7 bode well for Fiio. And I have everything they've output over the last three years, and I'm constantly referring to the legacy players for reference to the newer ones. I call it as I see (and experience) it, and if I encounter problems (as with the M3K), I share that info with everyone. From my perspective, if performance issues are brought to Fiio's attention, they tend to address them very quickly. In terms of the "death" of the X3 (and possibly the rest of the X series), it seems to me that Fiio has chosen a new path, both appearance-wise and in terms of functionality. And their newer In-ear monitors are darn-near world class, especially at their price point.
]]>