Those Audi V8s do sound good on startup but once the revs get going thay sound rather tinny.
The small cylinder bore (@ 4.0liters) cannot sustain resonance power. The Zonda`s V12 is a large 7.3liter that can rev @ 7000rpm. It`s bore, and the fact that it has 12-cylinders without turbos makes it sound evenly toned and powerful, even when the revs get going. Old video but man, that sound!!