Acoustic guitar feedback supressor. Designed for use with DM Promag. Fits around Promag pickup in soundhole cavity, covers entire soundhole area. Made in USA.
The Hole Master not only suppresses feedback on Acoustic/Electric guitars it also protects your guitar from cracks and tone changes by sustaining optimum humidity with the switchable Humidifier and Dehumidifier, even in the most severe conditions. Humidifier Kit: If the humidity level gets below 45%, the instrument could develop cracks on the body. The humidifier kit releases moisture inside the guitar maintaining necessary humidity levels in dryer conditions. Dehumidifier Kit: If the humidity level gets above 55%, the original sound of the instrument can change. The dehumidifier kit works by blocking and absorbing unnecessary humidity inside your instrument, and maintaining the optimum level of humidity throughout it. The dehumidifier is made with an instrument tageted silica gel that absorbs humidity effectively for up to 3-4 months. For re-use, let it dry in natural sunlight.
Martin FBR 2 Acoustic Guitar Feedback Buster helps eliminates feedback with acoustics guitars with pickups. Great for live use. Constructed of Black Rubber, easy to install. Fits most acoustic guitars. Plugs into Sound Hole Fits Soundholes 3 7/8" to 4" Accomadates Extended Fretboards
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