BrahialisI have the same wonder, because I have the older X7 and the same amp module I would use in the X7 mkII (unless I got my hands on the THX module) and I’m very happy with the sound quality. The M11 Pro offers a few more hours of battery life (not much), faster start up time, more compact package, and hopefully faster WiFi downloading, but since I’m already happy with the X7’s playback I wouldn’t want a sound quality downgrade.