I don't know how to go about proving it to you, I wish I knew a way, I tried all types of Samsung, Apple, LG, Motorola smartphones over the same usb cable, at same volume with onkyo (bitperfect) setting, with my se846, some devices are similar but all are different, to me note 5 provided the cleanest nicest sound, so pleasing over LG v10, LG g3, note 4, s5, dx90, dx80, dx80, iPhone 5s, iPhone 6, iPhone 6s+.
Note 5 was just thr nicest clearest, purest real sound, idk how to prove it, it is what sounded best to Me.
With thay said, I continue to use dx80 (probably the 4th best sounding out of all other devices I've tested) due to its portability form factor and it not being a phone
(all phones were put on airplane mode when testing) music was mp3 320 and flac 16/44.1. Played off the Onkyo player with bitperfect. Used the same songs thst I am familiar with in every test.
But to prove it to you... U want me to get a notary?