Hello all. I would like to give my 2 cents on this. First of all, numbers don't tell the whole story. Just because a sound system has 9 speakers does not make it better than a sound system of 6 speakers. My old Camry 2001 had the sound upgrade: 6 speakers, but an excellent system. Sound from the front as well as from the back. I could play big time bass music (Robert Miles - Children) and everything would vibrate. I played Pink Floyd live and I thought I was IN the concert hall. Very pleased. Camry had to go, a 2018 Avalon hybrid came. This system has 9 speakers. When playing classic and jazz, it sounds "warmer" and when playing Fleetwood mac style, definitely crisp, but when going into more bass profound songs, I am afraid I might break the 2 front woofers (in the door). I am sure they can handle it, but in my Camry I would never hesitate to turn up the volume for anything, including 50 cents. And then the 3 speakers in the back of my Avalon, they are there but you barely hear them. Using the fader is no use. While the front speakers are probably a tad better than in my Camry, the surround I used to enjoy, is not there. Now the violinists are playing in front of me instead of me being surrounded by them. And so I turned to Lexus to see what they have to offer in this respect, because I want to change the other car in the household at some point. I took my CD along with all sorts of music on it. How incredibly well the 2019 ES drives, how incredibly "crap" the stock 10 speaker soundsystem is. I ask the sales person if I could listen to the stock system in a 2018 ES. Boy, what a difference. Only 8 speakers, but absolutely better. Better than my Avalon too, and in terms of volume and crispness, better than my Camry's as well. Put the fader 20% towards the back in the 2018 ES and there is full surround. So then I listened to the 2019 ES ML system. Very clear and great sound coming to you...from the front! There is no surround because sound from the back is absent. Then I listened to the ML in the LS. Same story. It's good, but I don't understand the philosophy of having so much less coming from the rear. I am waiting to hear 2 cars that the dealer did not have: An 2017/2018 ES with ML and the 2019 LS with the standard 12 speaker system. This whole experience with Lexus' sound systems is going to make me rethink about my next car. Maybe a CPO instead of new. I think Lexus missed the boat on these new systems imo. In math (my back ground) numbers don't lie, but when it comes to sound systems, they do. Hope to hear your opinion.