The year 2015 is very different 2005 as far as portable media player goes for me. I probably lost 10 years to 256kps MP3 and I am determine to start afresh to listen to high resolution audio. Many DAP on the market today with shortlist for this listener to either AK100 ii or Calyx M and the coming Sony ZX2. Still, i am not convince AK240 is worth the value to buy a portable DAP. It would be better to get a top of the line headphone rather than pursuing the current TOTL DAP. In 1-2 years time, AK240 would be “obsolete” in electronics value.
We did a aural comparison between iphone 4 vs iphone 5 recently and all agree that iphone4 is a damn good DAP for all it’s worth. Between iphone 6 & Calyx M, the ip6 holds up well with Calyx M winning with more authoritative musical performance. ip6 sound drier with Calyx M providing more listening excitement.
Right now, I am stuck with a semi-faulty Calyx M, whereby the battery life is extremely short and it discharges overnight be it in standby or power shutdown mode. I have wrote to the dealer which I have purchased from and they are checking with the Hong Kong supplier for a resolution. The UI and large screen of the Calyx M is the best out there and way friendly to use than Hifi Man and Fiio X series.
In conclusion, my advise is to get the Best Headphone or Earphone first. With good source file, any capable DAP will present the musical enjoyment you are seeking.