The LR Baggs M1 acoustic soundhole pickup uses new technology developed by Gary Garrett and Lloyd Baggs to allow the pickup to respond to the guitar's string and body vibrations.
The M1 is a humbucking pickup - with a twist. In a common stacked humbucker, the second, lower coil cancels hum, but doesn't contribute anything positive to the sound. In fact, it can muddy the sound of the main coil. In the M1, the hum-cancelling coil is suspended under the main coil by a tuned support that allows it to move in three dimensions. The primary coil moves with the guitar top and creates a body signal in the suspended secondary coil. Motion is carefully controlled to add the presence and realism from the body signal while suppressing runaway feedback. This brings the M1 to life, with string and body sound all in one. It's like having a dual pickup system in your soundhole. And it's all passive - no pre-amp is needed. The M1 allows you to play at high levels without feedback, and the combination of string vibration and guitar body sound produces a quality of acoustic sound unrivalled by other soundhole pickups (well, except for the LR Baggs M1 Active!). Ideal for both live and studio situations.
The M1 is easy to mount across the soundhole using two fixing screws - the tapered ends of the pickup mean that it can be fitted to guitars with soundholes of different diameters. Connection to the endpin jack socket is is via a detachable lead. (Endpin assembly and lead are both supplied.) If preferred, a longer lead is also supplied for direct connection to an amp. Adjustible polepieces allow the balance of individual strings to be adjusted - although the factory setting is usually spot-on.