Blanket denial? Apple hasn't denied anything. In fact, they haven't said anything at all. Just because they haven't supported your theories with an acknowledgement doesn't equate to a denial.
What relevance does bias have here? This is not a faith-based argument. Everything I'm saying is simply logically following evidence and reports we all have access to, which I cite, repeatedly and often, when I post.
I've never claimed to have inside info or push a company line. And he works in the audio division, in fact. So if having a friend who might know a thing or two about what's actually going on somehow makes me less informed, have at it.
That's a flawed testing procedure. Your ears have already heard the sounds during the first test, so your ears know what to listen for. Which makes it much more likely you'll indicate that you hear them on the second round.
I don't entirely dismiss your perceptions as evidence of something, but RTINGS already did that test of 2B584 vs 2B588 with actual dB measuring equipment, and found no noticeable difference.
The fact that they were pushed to do the test after reader complaints, and found no measurable difference with testing equipment, supports the argument that this is psychosomatic and echos the phenomenon experienced by Bose QC35 users. (People complained; Bose intervened; no difference was found by Bose engineers).
This Forbes article was also inundated with readers who reported no difference in ANC with 2B588.
So if you both noticed a drastic difference, clearly there's something else going on, non-firmware related. Yes, psychosomatic perhaps.
Also, did anyone notice RTINGS retracted their conclusions about 2C54?
Thanks for bringing facts, not feelings, to the table here. If I had a nickel for every statement like “I feel...”, “I think...”, etc... in this thread, I’d be very wealthy.