PhonoPhi
Headphoneus Supremus
I'm actually impressed with how dumb this sentence is.
For one, there couldn't be a "super instrument" reproducing a full orchestra because how the hell would it be operated?
For two, the world's best full-size headphones are single membrane. Do you seriously think your little chi-fi multi-driver IEMs are competing with the likes of the Audeze, Stax, Focal, or Sennheiser's massive flagships? Or hell, even something like Campfire's TOTL single-driver IEMs?
For three, that which creates sound has absolutely zero bearing on that which reproduces sound.
By your logic, headphones playing a symphony orchestra would need about 60 or 70 drivers, one per instrument. Or a recording of a piano would need 88 different speakers, one per string.
It is humbling to receive such a strong emotional response. It also reminded me of Einstein 's saying. The man was sure only about two infinite things, actually one
Your strong arguments seem to be all precedent-based, your citation list of "flagships" is seemingly intimidatingly impressive mind- and wallet-wise.
Though empowered with such strong logic, back upon an introduction of steam engines, seemingly an impeccable precedent-based argument would be to dismiss those engines since the horses are surely faster
This logic would also help to be a good target audience that can be easily convinced to buy another horse for your stable since it is the fastest, the "flagship" of the hour.
Now from the horses and "flagships" to the sound - those "60-70" symphonic instruments playing at once their individual parts would make for a true cacophony that your ears would not be able to resolve no matter what "flagship" is used. No need to go further with this logic to a piano with its couple of hundred strings (there are even more strings than the (88) keys if you look closely into it)
Actually, the number of voices that the human brain can simultaneously meaningfully process is 4-6 at best. In fact, one of the unsurpassed masterpieces of classical music is Bach's six-voice fugue from The Musical Offering. Surely, more voices can be written for some "flagship scores" for the fame of the day, yet they may not sound as beautifully intricate and magestic....
Also there are just 10 octaves in the audible range, out of which less than 8 are most important for the music, so 8-12 independent drivers actually will do the job nicely based on both physics and psychoacoustics!
Talking more about precedents, I am blessed to be able to listen to string instruments live closely daily. I can assure you that the sound of a violin up close is even different from its sound at a distance and is quite far what a DD can reproduce physically. BAs (as multiple agile drivers) give a better approximation to my ears, more so less dampened harsher Bellsings than Knowles (sorry to bring another Pandora's box). Strings do sound quite a bit harsh up close when bowed.
Finally...
" For three, that which creates sound has absolutely zero bearing on that which reproduces sound."
This sentence I can only say I have some difficulty to grasp
What about a precedent of reproducing the violin sound with drums or drums with a violin, even the "true flagship" Stradivari one