NEO-D Magnetic Soundhole Humbucking Pickup – PassivePRO-NEO-D02 Humbucking Pickup This value-priced cousin of the award winning Rare Earth pickup shares the same neodymium magnet structure for exceptional string balance and sparkling acoustic clarity.The Neo-D’s low-profile, high-impedance design needs no battery. Humbucking—Warm and full humbucking sound.Features:• Neodymium magnet structure for exceptional string balance and sparkling acoustic clarity• Low profile, high-impedance design needs no battery• Easy installation with no alteration plug & play right out of the box• Excellent string-to-string balance and acoustic clarity• No battery required• Fits soundholes as small as 98.5 mm.• Humbucking model features stacked coils to eliminate noise