The DiMarzio DP136 Super Natural Plus is an acoustic guitar soundhole pickup that goes beyond ordinary-sounding pickups with incredibly crisp treble, tight bass response, and patented 60-cycle hum reduction. This combination allows acoustic players to deal with real-world situations where feedback and weak sound can be major problems. The pickup is encased in a plastic cover molded to look like dark rosewood, including the wood grain. It installs easily beneath the strings. Shock-absorbing foam lines the inside edges of both mounting brackets keeping the pickup in place and protecting the soundhole. There are individual adjustable poles for each string and the built-in 12' cable is thin and light. The Super Natural Plus also features a slide volume control for easy adjustment while playing. Recommended for all steel-string guitars with soundholes measuring between 3-11/16" and 4-1/8" in diameter.