No rasp, low quiet tone idling, nice aggressive sound at WOT. I myself never noticed the drone at cruising. Below are a couple clips from Morano Racing why I bought the V2's.
http://www.youtube.com/watch?feature...&v=0uUBTlJBP1M
http://www.youtube.com/watch?feature...&v=K8INHKdF5Go
Dean.
