(just restating it here with everything together) My M1 is an early model, 4 performance and 4 efficiency cores, 16GB RAM. It handles poly-sinc-gauss-xla/poly-sinc-gauss-hires-lp filters, ASDM7EC-light modulator, and Holo Spring 2 DAC corrections, to 48k x256 == DSD256, adaptive rate, leaving a bit of headroom but not enough for ASDM7EC-super. Your proposed M2 Pro is quite a bit more machine than mine.