This cable has worked amazing for us! Ours is used in our car so that we are able to play music from our MP3 player directly through the vehicle speakers. It does not deter from the sound quality at all!
When I first saw it, I thought perhaps 6ft was going to be too long for what we wanted to use it for, but it turned out that its the perfect length as well. It reaches to the backseat so our daughter can be in charge of music on trips as well, which makes for a happy family all around <3