So far, I was deterred me to buy such a device, the high price of such players. The X1 comes FIIO Once therefore low. But he has no memory installed and no headphones are in (but who uses the supplied already seriously). So would at least the price of a memory card to be added. FIIO delivers beside a silicone case with screen protector also. Anyone who wants to can his players decorate my various "stickers". A USB cable, there is the idea, but not a battery charger. This gives it cheap to buy, and has a modern household anyway diverse power supplies available. My X1 came with firmware version 1.2, therefore, to download is 1.1 offered. The software I can find no errors, only the operation with the scroll wheel and the 4 keys requires some training. I have the X1 a 32GB Class 6 memory card donated. On the internet you will find various audio files in real 24bit 192KHz. So I tested the player first. And I've used a variety of headphones. A Koss Porta Pro was then simply overwhelmed with individual passages. Much better behaves against the Beyerdynamic DTX 910. Playback is very detailed and not too loud. Instruments can be sometimes very good places. Subtleties in instruments are very well reproduced. Another experiment with a Harman Kardon AE, however, was a sonic disappointment. Of course, the player had to prove even with normal MP3 playback. I think here at least the difference between good and bad shots will clearly. Well-known already heard music comes across in a whole new quality. Subtleties are audible which were simply not to hear other players. So also will not play high-resolution music improves the X1 audible, provided the quality of the MP3 file is this at all here. Conclusion: If you want to hear more than the monotony of a smartphone and will let his ears once bestowed something good, which is the player strongly recommended.