It is kind of a fate for acoustic guitar to be beset by feedback problems especially at gigging volumes. The advanced processing engine in the BOSS AD-10 Acoustic Preamp provides multiple levels of feedback protection that are engineered to produce maximum results with little-to-no tone coloration.
ADVANCED TONE TOOLS FOR SERIOUS ACOUSTIC PLAYERS
BOSS AD-10 Acoustic Preamp
https://www.boss.info/global/products/ad-10/