Exactly. I think some some sort of presets based on a "flat" setting would be great. In fact, I think that a flat frequency response would be desirable. At least to make up for deficiencies in any particular speaker set-up. And doing all four speakers independantly would be the only way to do it! :) Some home-audio receiver makers have been toying with this capabiliy.

About the input: To be honest, most of us aren't too good at hearing high frequencies and the car is not the best environment for them either.

I think that it is much more practical than noise cancelation techniques via the microphone.

What would be great is if a plug-in could adjust the timing between the rear and front speakers so that all speakers' output reaches the driver at the same time! drool

12gig Mk. II BLUE
Detroit, MI USA
www.PfeifferBeer.com