Watched some videos on Youtube about the brass pins and although I was a bit sceptical, I still decided to pull the trigger. I put them on my Sigma tm/12, which is basically a copy of Little Martin and in addition to making the sound a bit louder, they indeed made the tone brighter as well! Some may say that making such a small guitar even brighter sounding is a really bad idea, but I personally like the resulting boxy and bluesy sound of it. The only problem I have is getting them out of my guitar to change the strings.