Aren't the tone and bass settings saved differently for each 'input'? ie. Radio, CD, etc.?
I'm sure mine are all different...
I find the quality of the cable you use makes a difference.
Yes Bose has a sub, in the rear quarter panel
You are correct Alex in everything that you've said. On the Bose there is no audible difference between say a £10 and £90 cable because it cannot reproduce that.
I was referring to the quality of 3.5 to 3.5 cables say something that you can buy from the pound shop and something that costs £5 or £10. I have both and you can hear the difference. As I say, more broadly your point is one that I agree with.
I must also say you can't knock the Bose for the speakers and upper end, I think most of the problem comes from the "sub" which is a glorified mid. I've never heard B and O in the A3 but that is meant to be better.
Regardless of anything I commend Audi for making some sort of effort. In a BMW anything but the expensive optional audio systems sound ****.