Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Poor Quality Control

I bought one of these players for my sons birthday. It was DOA (dead on arrival) we sent it back and the 2nd one was also DOA. Both my son and I are experienced computer technicians and we tried both units on different computers. After sending back the 2nd one for a refund I bought him an I-Pod which did work right out of the box (as have every other Ipod I have ever purchased)