Fishman Neo-D Humbucking Soundhole Pickup

Passive Humbucking Soundhole Pickup For Acoustic Guitar.
Neo-D Soundhole Pickup Features:
Neodymium magnet structure for exceptional string balance and sparkling acoustic clarity
Low profile, hHigh-impedance design needs no battery
Easy installation with no alteration, plug and play right out of the box
Excellent string-to-string balance and acoustic clarity
Fits in soundholes as small as 3-7/8″ (98.5 mm) diameter
Humbucking model features stacked coils to eliminate noise