Best RCA Cable adapter

[TheWomo]

Ok so I've got a set of Bose speakers but they have RCA male cables for connecting to devices. I was looking at some adapters as I don't have any direct RCA female connection points on my PC. I was wondering if I used a 3.5 headphone jack to RCA female would it produce worse sound than adapting the RCA cables to a different connection point in my PC.
(I'm asking this because I don't know much about audio devices and there cables so please simplify or explain an answer)

Cheers

 

[popatim]

Your pc cannot run those speakers, you need to wire the pc to an amp and then connect the speakers to the amp.
Your pc's soundcard has just enough power to run headphones.