Pop/crack from unit in XD-V Digital Wireless Microphones Posted October 11, 2017 Just finished a gig where i was using my XD-V75 headset system and G30 guitar system. There was a 'pop' that seemed to come from the XD-V75 receiver, but no smoke. PA speakers turned off at this point, so not down to speakers. Will be checking functionality in a bit, but just wondering if anyone might have an idea as to what might have happened? It powers on and there's an input/output still. Strange. At least it's under warranty still!