For posterity - both the 14" and 16" MacBook Pros (regardless of CPU) have the same DAC/AMP.
These Mac computers support high-impedence headphones with the built-in headphone jack:
MacBook Air (M2, 2022)
MacBook Pro (13-inch, M2, 2022)
MacBook Pro (14-inch, 2021)
MacBook Pro (16-inch, 2021)...