>You are effectively arguing that the Apple dongle is the last word in headphone amp fidelity

Uhm no? Have you not read what I typed?

>I'm not saying that there is absolutely
no difference, I can't say for sure. I'm saying that your "trust me
bro" approach isn't convincing enough to claim that as "objective",
because that's what "objective" means

Anyways, what I'm saying is, you claimed that there's objective differences, but you only listened through you own ears, and you didn't describe how different they are apart from some vague terms like "more detail and clarity" in ONE comment. Also, in the other comment you made, you said that "Every single aspect of how an audio device sounds can be measured", well, instead of throwing around buzzwords and arguing your ass off with random internet strangers like me, how about you provide said measurements and how those measurements corresponds to your experience? Educate us.