I've only installed three, all on guitars, but I was going to say pretty much what Tim said!   They work great and I found nothing at all to complain about in the sound!

The first one I put in was in a friends older and very nice Epiphone about 12 years back and I had some misgivings about the idea. Since I only live 40 miles from Stew-Mac, I took the guitar and went down. After asking my questions and showing the problem, they told me what I would have to do slightly differently and I then asked, "Listen....Is this going to work?" The guy helping me named Jim (now has a shop in of his own in Grove City) just gave me a real shit eating grin and said, "Oh yeah....It'll work."   And he was right.

Good product as far as I'm concerned.


Spaw