Crafted for the discerning acoustic player who seeks a warm, clear, and vibrant amplified tone. The added preamplifier delivers noise-free, authentic steel-string guitar sound. The pickup requires 2 CR2032 batteries for operation. Simply drop this pickup into the soundhole of the guitar and gently tighten the mounting screws until it is firmly mounted to the top. The high-quality mahogany cap, electronics housed in birch, and lightweight design ensure maximum sensitivity and durability. HP-1A utilizes the power of neodymium magnets to provide a strong, balanced sonic experience. A 1/8" to 1/4" cable is included for easy connection to an amplifier or mixer.