They do sound very similar to glasspacks but more raspy and sharp and not as much as the "flabby" sound that glasspacks have on light throttle but still very far from the tinny Flowmaster sound. I'm pretty sure there's an idle/rev clip of my Duster with the powersticks in the exhaust clips thread. They are rather loud but the sound is amazing all the time, not much drone when cruising either the longer ones (or multiples in series) you use the quieter it will be.
