I have my original review on this product (which took me about 2 hours lifetime) deleted. This article I got as a product tester on the Vine program for free and therefore I have to write a review. At the request of the Article, however, I was not aware that it is apparently dealing here with a high-end device that I call "normal" music consumer can not test. In this respect, probably perfect pitch what you probably must have apparently to belong to the target group of this product I lack.
The 5 star I therefore forgive on suspicion, because I'm just too stupid for truly understand this product. Wen still interested my Amateur opinion: The device is great and if you want to spend the money for it and appreciate the features knows where I can the Sony NWZ-A15 Recommend without hesitation. I've finished! ;-)