NAMM '17 - Boss Acoustic Singer Pro Demo Jason ShadrickFebruary 16, 2017VideoHarmonies and effects are a snap with the latest combo amps aimed at singer-songwriters. gearvideosnamm-2017gear-show-demoacoustic-ampsampsacousticbosswhats-newEffectsAmpsGearAcoustic GuitarsNAMMVideosReviewsAcoustic