I think bombiggity is on the same wavelength as we are (Marks my buddy and we have been discussing this issue). Bombdiggity did mention one thing that has me thinking ... I wonder if the mics were fried when they were sold on eBay? A sure fire way of testing them would be to send them to Guy Sonic and let him evaluate the mics. Maybe resident mic guru, Chris Church, wouldn't mind looking at other peoples mics. I mentioned to Mark he should borrow his friends battery box/pack, and use it with his mics. If the problem is still there, then we know it’s the mics. Go to a show that he don’t mind f’n up just to test the mics with the box. Worst case scenario is the mics are fried. We could either get Guy Sonic to fix them or see if Chris would.