More impressions would be nice guys. I'm not going to purchase the ZX2 just yet but will do that in the future. To those people who think about upgrading a DAP, they might have a better bang for bucks by upgrading to higher end earphones instead. I noticed that several people in this thread spent nearly $1200 on the ZX2 but still using a mid-grade earphones. I think these same people will be able to get better sound from something like the ZX1/A17 + $1000 IEMs than ZX2+$300 earphones. I adopted to upgrade my original JH13pro to JH13pro FreqPhase for $350 first and that is the best bang for the bucks so far in my DAP and IEMs journey.
Kind of true about headphones/iems upgrades before dap upgrades as it gives you an extra time to adopt the new sound signature and for proper burn-in as well, but I disagree with this part of your statement ''
better sound from something like the ZX1/A17 + $1000 IEMs than ZX2+$300 earphones'' , I own (ed) several iems and headphones from ten bucks to the cost of a whole desktop rig, it's not always true that $1000 headphones sound better than $300 siblings, sometimes it's just a matter of signature and frequency preferences (color and taste), I recently auditioned an $80 headphone, the Takstar Pro 80 and compared to my Sennheiser HD650, the lil chinese brand was the clear winner.
Same experience applied from auditionning a $45 Vsonic VSD3S vs the Earsonic sm2 v2 which cost about 5x more, again the winner was the cheaper one !!!