Super nice tool. I didn't know that they work also on acoustic instruments. Works on several acoustic instruments that I have at home, basically it works anywhere there's steel/metallic strings. Doesn't work on ukulele, for example, but works very nice on acoustic guitars. Has a switch that sustains notes or harmonics, giving you a wider range of options to experiment. Good product, and if guitar is your main instrument, I guess one day or another every guitarist has to have one. My only criticism? It's made of cheap plastic, and at this price I would have expected something better. Other than that? It's a classic.
Emilia S. on 2014/09/09