I have a 2020 801A without the B&O system. I decided I would just add a little more bass by adding a Kicker 10" hideaway. Nothing crazy, simple to install... Well Here I am 3 days later waiting for the Kicker plus a Kenwood 4 channel amp, Polk Audio 6x9 for the front doors, Polk Audio 6.5 for the back door, Dual amp wiring kit, PAC LPA-2.4 Active LOC, and the PAC LPHFD21 T Harness adapter along with a crap ton of miscellaneous other items to complete the install. I guess you can say I got a little carried away. Not wanting anything super loud and boomy, just good clean sound with clear highs and mids and a good low end. I am sure that there are better brands out there, but I went with brands that I am familiar with and at a decent price, I think it was around $850 for all of the equipment, wiring and accessories. I did up a schematic for the install to get it all straight in my head as well as a design for an amp rack behind the rear seat to keep it all clean and neat. Been a long time since I installed a system so I hope I have not bitten off more than I can chew.