This cable is a great extension and converter. I use it for my CD player. It has a mini jack output and I plug it to my amp sometimes. The sound quality is very good, nothing gets lost. The material used for making this cable is also very good, no cheap materials for this. The price is also reasonable if you look at quality of this cable. What I also like is that the cable is not too short neither too long which is sometimes the case with such cables. You can also plug the ends into each other, which is practical when your transport it. When you look closer, you'll see that the cable has been sealed very professionally in order to avoid dysfunctions, but you can also open the cable in case it wouldn't function anymore and you would like to repair it yourself which is fantastic I think.
In order to maintain stereo sound, this cable is the best. I'm sure I will be able to use this cable for years without any problem. This is by far the best stereo mini to regular jack converter your money can buy, no scam here, just good quality !