LR Baggs M1 Soundhole Body-Sensitive Magnetic PickupM1 Series Passive 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 guitars soundboard With a punchy string attack, the M1s 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