unless you try it you don't know what you're talking about. It costs 20 cents. I got this from the Harry's section of the VPI website. There are those who say that pennys are preferred....I found that dimes work best in my system. No....one would think that 3 coins would be better, but no...2 coins does it. In my system, it widens and deepens the soundstage...perhaps rolling off the low bass a bit - not not much. I posted this because I share sound ideas....the choice to try is yours.