From what I understand from reading many articles and forums, the quality of the analog cables being used is very important to the overall quality of the final output. Knowing this, I have started looking for a good quality audio cable to meet a certain specific need. Basically, I need a Y cable of the type that would turn separate RCA audio left and right jacks into either one mini-stereo jack or one 6.33m stereo jack. I have tried looking at some of the same companies that make high end audio cables recommended by this magazine but can't find such a simple product by any of them. Can someone recommend some good brands that carry such a cable?

This is an example of what I am looking for:

thanks