Been using it for the past 5 years, playing around with it and trying it on many different amplifiers. It's such a little versatile tool that can be used for having fun and even recording. It is a little bit difficult to use at first until you get the hang of it, but as soon as you do, it feels like child's play. Many different effects with huge ability of modifying. You cannot go wrong with this tool, I strongly suggest you give it a try and you will not be able to let it go anymore.