[Bob Mentzer]

My ATR-3350 started making this buzz/rumble noise after a few uses on my Panasonic HCV700M camcorder. Tried a new battery, checked connections, etc. still comes and goes. I sent a link to your sound sample to Audio Technica asking for a resolution, and they asked me to try the mic in a computer or other device and if it still does it to send it in for repair (at my cost because I’m sure it is out of the warranty period). Yeah, for $18 I just ordered another one on Amazon and will see if it is any better.