Disappointed, returning the purchase. Expected so much more after reading all the superlatives on the web. And I can't say that my ears are spoiled. This is my first "serious" IEM, I usually stream FLACs with the iPhone SE and Bose QuietComfort 35. No, really, my old setup ain't so bad, compressed Bluetooth or not, despicable Bose or not. Give me my EUR 800 back.