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Used Nihon Kohden AB-651J bioelectric amplifier module for EEG and EMG signal measurement.
The Nihon Kohden AB-651J Bioelectric Amplifier Module is a slide-in electrophysiology amplifier designed for measuring low-level bioelectric signals, including electromyography (EMG) and electroencephalography (EEG) signals. It is intended for installation in a compatible Nihon Kohden main unit or rack system.
The adjustable cutoff frequencies and sensitivity controls support signal conditioning for laboratory electrophysiology, biomedical engineering, neuroscience education, and EMG or EEG measurement workflows. This used bioamplifier module is intended for integration with existing compatible Nihon Kohden systems and is sold as-is.
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With a service contract, ten to fifteen years is normal for most benchtop instruments. Detectors and pumps are the parts that wear first.
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Two to six weeks, depending on refurbishment scope and whether calibration is included.
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Last updated 7 November 2026
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