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Digitimer North America

"Bah, Hum Bug!" A Smart and Effective Solution for Multi-Channel AC Noise Elimination Cost-Effective, Compact, and Easy-to-Use Alternative to Multiple Hum Bugs


Hum Bug main noise eliminator

Anyone familiar with the challenge of isolating and removing 50/60Hz mains interference from electrophysiological recordings understands the revolutionary impact of the original Quest Scientific Hum Bug. With just a quick connection, this device swiftly eliminated persistent electrical hum, drastically improving recording quality in mere seconds.


Since its debut, the Hum Bug has become a trusted staple in electrophysiology labs worldwide, valuedfor its robust performance and ease of use. It freed researchers from the frustration of tracking down elusive noise sources, allowing them to focus on experiments instead.


The Multi-Channel Challenge

While the single channel Hum Bug remains a remarkable tool, it falls short when multiple recording channels are required and effected by the pesky AC noise. To capture clean signals across several channels, users previously had to deploy a separate Hum Bug for each channel. This approach presents significant challenges:

  • Each device demands its own power supply cable and socket.

  • Front panel controls must be operated individually, making simultaneous global control

  • impossible for functions like "Hold", "Bypass", or "Clear".

  • Connecting multiple units requires 16 individual BNC cables for both input and output signals.

  • The cost of deploying eight Hum Bugs can exceed $15,000—an unsustainable expense for many academic labs.


A Game-Changing Solution: The Digitimer D400

To address these limitations, Digitimer has developed the D400 Mains Noise Eliminator, leveraging the operational principles of the Hum Bug while introducing an enhanced algorithm for interference removal. Available in two, four, and now eight-channel variants, the D400 offers a streamlined and scalable solution for modern labs.


Why Choose the D400?

  • Cost-Effective: The eight-channel D400 is less than half the cost of using eight separate Hum Bugs, providing significant savings for budget-conscious labs.

  • Efficient Multi-Channel Operation: No need for multiple devices or complex cabling—one D400 unit handles multiple channels seamlessly.

  • Standalone, Versatile Design: Unlike other noise eliminators tied to specific data acquisition systems, the D400 operates independently, making it compatible with any setup.

  • Superior Performance: Real-time removal of 50/60Hz mains noise and harmonics ensures high-quality signal acquisition without degradation.


Key Features of the D400:


  • Multi-channel noise elimination (2, 4, or 8 channels)

  • Cancels 50/60Hz mains and harmonic interference

  • Portable, standalone design for easy integration

  • Analogue signal path to preserve signal integrity


D400-8 Noise Eliminator: Affordable, Scalable, Reliable

Ready to elevate your electrophysiology recordings? Discover the benefits of the D400 or explore how it compares to the classic Hum Bug. Contact us today to experience a superior solution for noise-free data acquisition.



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