I'm a bit iffy on having a voice response to empeg controls. Come on, how annoying will that be? After a few days of that, you will be screaming shut the hell up. In the very least, make it a disablable (is that a word ;) option. Heck, how embarassing will your car be? I can picture the volume knob turning and a voice going "volume, increasing, increasing, increasing, increasing, decreasing, decreasing, increasing...." errraarrrar shut up!! :)

Calvin "fooling around"