Coming from my 2017 into a 2018 I can say for sure that the B&O stereo is a huge upgrade over the Sony product. I listen mostly to Texas & Red dirt country and the crispness of the new speakers is outstanding. My wife has BMW X5 with Harman Kardon (who owns B&O) and it is on par with that product. I can compare the 2017 and 2018 pretty effectively being that I owned both inside a 2 week span. I haven't listened to anything with a ton of bass yet so I cannot comment on sub woofer but will at a later point in time. You 2018 owners will be happy if you pick 802A and stereo!