I would say because it being prestretched it doesnt have any give to ubsorb the vibration. If you only paid 55.00 I would say that you didnt replace the buss cable. That could have a little to do with it and I would think you will be needing to replace the cable soon. I didnt notice alot of diffrence in noise when I put a winners choice on my bow. I put cat wiskers on. Also if it seems to be alot louder maybe something else is wrong. Check brace hieght measurement and cam timing to see and make sure it is the correct length of string. I personaly had them send me the wrong length string & cable. The package was mismarked. I have herd of three others who had this problem with their string.