I know the crap Bose radio on a 70k+ truck is a sensitive topic but just spent the last hour in my truck and here is what I learned. Listening to music through Apple CarPlay. When you just have the rear speakers engaged at best I get 20% of the sound front speakers maybe 50% and the bass is total crap. When I disengage Apple and go through Bluetooth, the sound is significantly improved. Certainly not what you would expect from a truck this expensive, but it is a major improvement. This is where I keep my fade. Seems to be the ideal for me and where my seat is located. Back to apple, they dull the sound, volume and quality some how. Still need to figure this out. Anyone have input please join the fun. I love music and just wish the system did not sound like it was always struggling to push out quality sound.