It's like I rediscovered these cowons, everyday I mess with settings and they open up, I have alot of amps and dac, by fiio, and I'm using the xba a3 which is the next thing to the xba z5, there almost a month old so they have burned, I can say cowon can match almost any sound signature, I love my x5 and 12e, but I love my plenue d, as long as the earphones are good they sound excellent, even less expensive sound awesome, don't be fooled ath im50,im70,recommendEd by jmills, are awesome, I heard them from a friend and a big positivity I'm gonna get them, unless I get the velvet, but for the collection I might get them anyway,plus some sony7550, and maybe one more player and then enjoy, thinking of cayin player with cayin amp, since they have great prices, plus I never had ibasso, any of them, I just received a text from amazon, I will be receiving my flc8s from flc technology on monday, I did get them for the plenue d since the case is blue and so are the flc8s, anyone that has them please let me know how they stand up, I will love to hear from you guys.