Depends on what you are expecting. If you expect bongo drum cannons/guns, IL-2 1946 level external sounds on the fighters and a universal in cockpit muffled engine sound, you're gonna love it.
The game is not finished, sounds have taken the backseat and before those are adressed, they have to work out all the teething issues. Many of the sounds are up to par, like clicking etc. but you have no inertia starter, no initial startup sounds, most of the sounds are similar regardless of aircraft etc. There's no variety.
I have the game BTW, been thinking about making a comparison vid but I don't want to publish a prick vid this early on in the development after release. I want them to sell the game. And the game IS bloody magnificent and shows alot of potential, it's just not finished. All in all, I'd give it a 70% finished. Buy it try it hombre.