The list of sounds is rather too long to list, basically if it is in a real A321 NEOPW - it will be in this sound pack.
Over 600 separate high quality sounds, recorded from many flights in real A321neo PW, cabin, cockpit, recorded by BSS, real world pilots especially for this product. 1.20GB of sound data.
It will not affect performance or fps, this product line (PRO) is a non-simmer version, basically how real aircraft sounds in every aspect.
Every switch position, every button, lever, selector position has its own sound recorded from real cold and dark cockpit.
The engine sounds PW 1000G are carefully made from real PW samples recorded from real flights from multiple positions, front, mid and behind the engines inside and outside.
All volume in decibels and pitch data is carefully measured and transformed into unique code to have SAME EXACT sound you would hear in real aircraft.