Have had my Nox for 3 months and am not happy with the sound system that I have. I bought while it was in transit so no upgrade option in it. Looks like the center in dash section where all the controls are would be impossible to replace with a decent aftermarket unit . Maybe the updrade of Pioneer might work but I am sure the dealer would want way more than I want to spend. So, I am going to see if I can put better speakers in but need some info/ideas on what might work.