That sir is hilarious
I've had nice rigs since I was 10 years old (OK, lets just say 55 years now) and I really don't have time to measure and differentiate all my stupid gear (probably the user here who's stupid) because I'm too busy enjoying my music no matter what I'm listening to it on
As for Knowledge Zenith these out of a massive KZ collection still get rotation time in weekly
And to the gentleman suggesting the BA10 as a Single driver I'm afraid you could not in good faith call it a 10 anything anymore
I'd also say why as the BA10 is my absolute favorite all BA iem I own and I have some nicer/nicer according to some but mine sound better to my ears than any other all BA I own. I have HQ-12's, DM6's, BW B400's, etc. but none have the magic of the BA10's.