Guys: the HK stereo in the M2 is exactly the same as in any other 2 Series car. There are absolutely no differences.
In light of this, I would
start reading through this subforum on 2Addicts. You'll soon find out that 2 Series stereos are far, far inferior to those in any other BMW model -- to the point where BMW refunded part of the option cost of the 2 Series HK upgrade in 2014 because it was improperly described by BMW as being a Logic7 system when it isn't.
The kicker to that? BMW never lowered the option price after that and never changed the option's specs.
Sorry, gentlemen, but I'm afraid you're going to find that the M2's stereo system is its weakest feature. Why? Because it is in 'regular' 2 Series cars.