[tzs]

I don't see any reason wireless can't be identical to wired as far as audio quality goes on a phone.

If we were talking about wired vs. wireless headphones on a home stereo listen to LPs, then yeah, there might be something to talk about. There you have an analog source, and with wired the signal stays analog all the way to the transducers in the headphones. Going wireless will introduce an ADC on the stereo end and a DAC on the headphone end.

But with a phone you have a digital source, going to a DAC, and then to the transducers. The difference between wired and wireless there is that wireless puts the DAC closer to the headphones, and the digital signal goes over a wireless link.

I'd expect die-hard audiophiles to actually prefer wireless in theory, because with wired you are relying on a DAC and amplifier provided by the phone manufacturer. With wireless you are using a DAC and amplifier from the headphone manufacturer, which allows in theory for the headphone manufacturer to use a better DAC and amplifier than the phone provides.

[imtringued]

Because Bluetooth simply cannot deliver what you're talking about.