Sold a working power amp to this individual. They complained about a defect in the circuitry when they tested the unit, but when asked to substantiate the claims with actual testing equipment, they flaked out and complained to eBay that I was being unreasonable (for asking this person to prove that the unit was actually defective, crazy right?). Now I'm out the money and the amp because I would have had to pay for the return shipping, meaning I ultimately lose money on the whole transaction. Don't touch this buyer.