The ResoMax bridge is a Tune-O-Matic style bridge made of super-light weight alloy to increase harmonic content in every note. Less mass means greater vibration at a greater range of frequencies, so the sound of your guitar body -- your sound -- really comes through in the mix. Combined with ghost pickup system, this bridge creates harmonic content that cant be matched. The ResoMax NV is loaded with acoustic pickups that work with the Hexpander, Acousti-Phonic or with our ghost Kits.