BOSS VE-8 Acoustic/Vocal EffectsCompact, all in one preamp and effects solution for singers who play acoustic guitar Dial in rich, sophisticated BOSS sound processing with simple, intuitive controls Studio quality vocal processing includes four types of ambience effects plus Enhance, chromatic pitch correction for live vocal tuning, and more Create natural vocal harmonies in real time based on guitar input or manual key settings Also includes a vocal doubling effect, plus more