Seymour Duncan Active Mag Pickup

The Seymour Duncan Active Mag Pickup is a hum-canceling magnetic pickup engineered for acoustic instruments requiring minimal modification and maximum control. Its compact form factor mounts directly into soundholes between 3.75" and 4.2" in diameter, with on-body volume and tone controls that let you shape your tone without external pedals or preamps.

Design & Installation

This op-amp topology pickup uses two CR2032 batteries mounted directly to the unit, delivering 160 hours of continuous operation per battery set. The hum-canceling magnetic design with adjustable pole pieces per string ensures clean signal capture while allowing fine-tuned response for individual strings—critical for balanced output across the instrument.

Audio Performance

The pickup delivers a 28.60 kHz frequency response with 0.0075% THD and an exceptionally low 89dBV noise floor, ensuring transparent, low-noise amplification. Its 1.0 K output impedance and 1.5mA current draw make it compatible with standard guitar cables and mixing rigs without impedance matching concerns.

Key Features

• Two CR2032 batteries mounted directly to pickup
• 160-hour battery life per set
• Soundhole compatibility: 3.75" to 4.2" diameter
• Frequency response: 28.60 kHz
• Output impedance: 1.0 K
• Current draw: 1.5mA
• Noise floor: 89dBV
• Total harmonic distortion: 0.0075%
• Magnet strength: 0.58 kg Gauss
• Op-Amp topology with hum-canceling design
• Adjustable pole pieces per string for balanced response
• Volume and tone controls integrated on pickup body
• Standard guitar cable connectivity

The combination of low noise, low distortion, and integrated tone shaping makes this pickup an excellent choice for players who value signal integrity and hands-on control without external processing.