I wouldn't call the Magnaflow sound "drone". I have had mine for about a month, it has a sound to it in the 1500-2000 cursing range but it's more of a low hum/rumble not drone in my opinion. I find myself turning off the radio and just listening to the car more now.
2013 VR 1LT RS A6
Magnaflow Cat Back - K&N Typhoon - VMax Ported Throttle Body - Gloss Black Single Rally Stripe - Blacked Out Bow Ties - MGP Red Caliper Covers - Full Upper and Lower Gloss Black Billet Grille