Active magnetic soundhole pickup with volume control

M1? Series- Body-Sensitive Magnetic Pickup The M1 is for players who love big acoustic tone with high feedback resistance on any stage. Combining the natural characteristics of your guitar?s soundboard with a punchy string attack, the M1?s body-sensitive design provides enhanced realism while cutting through a loud mix. Body-Sensitive Design The M1 is a patented humbucking pickup with a twist. In a common stacked humbucker, the lower coil cancels hum, but doesn?t contribute anything positive to the sound. We unlock the lower coil with a carefully tuned support that allows it to capture higher frequency resonances. As the pickup moves with the guitar?s soundboard, a body signal is created in the suspended coil that adds presence and realism to your amplified sound. M1 Active? The M1 Active?s plug-&-play design features a preamp with audiophile circuitry for that pure acoustic sound we are known for. The built-in electronics boosts the pickup?s output for a full and direct signal to any acoustic amplifier or P.A. system, eliminating the need for any external preamps. The M1 Active includes a volume control and adjustable pole pieces for perfect balance and tone between the strings. FEATURES: Highly Feedback-resistant Volume control Built-in gold plated 1/8" jack makes removing the pickup a snap Long battery life ? 1,000 hours on one 3V lithium coin cell Adjustable pole pieces for perfect balance with most string types and gauges Includes a pre-wired strapjack harness