While I can't speak to the quality of the actual cable which is probably fine. I did find the connectors to be inferior. Two of the 4 connectors sit in the rca input jacks a little loosely and have a tendency to pop out. It seems there is some variation in the thickness of the tips. Giving it three stars nonetheless given it was pretty inexpensive for this cable length.
Very good product and EXCELLENT customer service. The 1st cable shipped produced a very loud hum in the left channel. Reported the issue to Monoprice, and 3 days later a replacement cable set arrived. 2nd cable was perfect. I also ordered five of the same cables in 3 foot length, all 5 perform flawlessly. I suspect the 1st 50' cable was a one off. Trust these products, they are very high quality for the cost, easily as good or better than my Monster Cables.
In my garage, I wanted the TV sound to come out of my amp (on the other side of the garage) so I used this 50-foot RCA cable to connect the line out on the TV to the line in on the amp. It worked great. Good quality cable.