I just got a Fiio Q5s amp some time ago and running some headphones over them. A pair of Dali IO-4's and a Shure SRH1540. I'm playing music mostly off my iphone (X if it matters). I saw the IFI Micro IDSD Black Label and wondered if I would get better sound from them? If I'm going to be using an iphone for music will there be an improvement over the Fiio with the BL? Does the BL support connections to an iphone X? Or would that just be a waste of money?