yep probably is a fault mic by the sounds of it. or it could be a fault port on the amp but the mic is more likely. you could borrow another mic but it wouldnt be ideal as the amps are calibrated for the mics that ship with them. best thing to do is get in touch with whoever you bought it from, or onkyo. you've waited 8 weeks already, and it shouldnt take long to rectify![]()