T-Rex Engineering DIVA-DRIVE Overdrive Guitar Effects Pedal with 3-Way Bass Boost (10089) Built on a firm foundation of the gorgeous, legendary JRC4558 IC overdrive gain Adds juice to enhance your sound, but leaves core tone intact Provides a virtuoso performance at any gain level Mix in clean sound for an extra punch while preserving your unique tone Voicing toggle switch on side provides 3 low-end boost options to match any guitar