Instruct: Classify Amazon reviews into positive or negative sentiment
Query: didn't work with DVD player

I bought 6 of these cables to provide input from a distribution amplifier to use with Orei P901 multi-format DVD players. They didn't work. Had to resort to using other cables that did. Be careful when ordering for connection to your DVD player. There seems to be more than one standard in use and there's no way of knowing without trying them first. Luckily they were cheap, but its still bothersome... I suppose they work with some equipment, but who knows what?