Here's my experience with it: I was excited to get it in the mail - but once I clamped it on my guitar, it was a bit disappointing. Because of its particular design, I had to put it right on the fret (edge) to keep the strings in tune. Otherwise, because of the way it pulls on the three strings while clamping down, the guitar will play out of tune. I tried it on two different guitars and had the same problem on both. Once it's on right though, sounds great.