Can it be done [Ear/headphones phase and time correct]

[nrenter]

On 9/10/2021 at 11:14 AM, Bill said:

Because there is only one driver in headphones I think they are by definition time and phase correct.  

That's not a good assumption - unless the driver is pistonic throughout the entire audio spectrum AND there's not some built-in filtering that's adapting the signal to the mechanical characteristics of the driver.