Global Excellence in Fixed Frequency Filters
Manufacturer of Quality Test Equipment Since 1949
Precision Performance with Advanced Fixed Frequency Filters
Looking for dependable solutions in fixed frequency filters? At Krohn-Hite Corporation, we have been providing innovative electronic test equipment since 1949. Our fixed frequency filters are designed to ensure superior performance and reliability, whether in critical laboratory settings or bustling manufacturing environments. Maximizing the utility and longevity of our products is our priority, allowing you to depend on both quality and affordability. We take pride in our “Standard of Value” that guarantees effective results for any application. Let our expertise in fixed frequency filters provide the solutions you need. Reach out to us today to elevate your testing capabilities.

Fixed Frequency Filters and Filter Modules
Our Filter Modules and Filter Module Boxes are a low cost solution for research and signal conditioning applications such as anti-aliasing in digital signal processing, separating specific bandwidths of information, enhancing signal-to-noise ratio, low noise pre-amplification and more. The filter modules plug-into various chassis and FMB series of boxes or can be used as a component in a pc design.

Model FMB3002
• Choice of 1 or 2 Channel
• Choice of Fixed Frequency from 1Hz to 1MHz
• Choice of 4-Pole, 8-Pole and 16-Pole
• Choice of Butterworth and Bessel
• Optional Pre and Post Filter Gain
• Choice of AC Powered or DC Powered
• Choice of Single-Ended or Differential Input
• BNC and Terminal Block Connections
• Mix and Match Modules
• Accepts Krohn-Hite 3F Modules Only
Model 3A, 3B, 3C and 3D Filter Modules

• Choice of 3A, 3B, 3C and 3D Module Packages
• Choice of Fixed Frequency from 1Hz to 1MHz
• Choice of 1-Pole to 8-Pole and 16-Pole
• Choice of Butterworth and Bessel
• Choice of Pre and Post Filter Gain
• Choice of Single-Ended or Differential Input
Module General Specifications
Fixed between 1Hz and 2MHz, Single-Ended, Low-Pass
Fixed between 1Hz to 1MHz, Differential (no gain), Low-Pass
Fixed between 1Hz and 600kHz, Single-Ended, High-Pass
Fixed between 1Hz to 200kHz Differential (no gain), High-Pass
Precision Power: DC Calibrators for Every Demand
Our advanced DC calibrators are engineered to fulfill the most demanding precision requirements. As a cornerstone of our product line, these calibrators provide unmatched accuracy and stability, making them an indispensable tool across various applications. From laboratories to manufacturing floors, our calibrators ensure your devices meet rigorous standards, keeping operations flawless. Experience the confidence that comes with precision-crafted instruments, tailored to keep your measurements exact and your expectations exceeded. Ready to upgrade your measuring tools? Embrace the assurance of our DC calibrators today!
Unravel the Noise: Preamplifiers with Superior Sensitivity
Achieving clear, uncompromised signals is at the heart of our preamplifiers. Designed to enhance the weakest signals without adding noise, our preamplifiers offer exceptional performance across diverse fields. Whether you’re working in audio experimentation or scientific research, our solutions offer the clarity and fidelity you need. We strive to ensure every detail is captured with precision. Dive into the world of superior audio amplification and see the difference our technology can make for you.
Empowering Sound: Dynamic Power Amplifiers
Our power amplifiers don’t just amplify signals, they redefine them. These dynamic instruments are renowned for their power efficiency and bandwidth capabilities. Tailored for versatility, they cater to a wide range of frequencies and power levels. From small-scale applications to complex industrial use, our amplifiers are built to push boundaries. Harness cutting-edge design and embrace the power of sound with tools engineered and perfected for both reliability and performance. Amplify your possibilities today and expand your audio horizons like never before!
Clarity in Every Tone: Benchtop Filters Perfected
Our benchtop filters are crafted to provide uncompromising clarity and precision across a multitude of requirements. Designed for versatility, these filters excel in separating, refining, and modulating signals with unerring accuracy. They are perfect for environments where sharp signal resolution is paramount. Whether in research labs or production lines, our filters deliver as expected. Step into a world where every signal sings with clarity and let our filters redefine your experience. Time to experience the crisp precision of our benchtop filters!
Program with Precision: Programmable Filters for Versatility
Embrace flexibility with our state-of-the-art programmable filters. We have crafted these with adaptability in mind, allowing seamless integration and customization suited to your specific needs. Ideal for dynamic environments, they offer superior performance in managing complex signal processing tasks. With user-friendly interfaces and comprehensive programmability, our filters ensure you maintain control at every step. Ready to secure precision in your projects? Let’s build versatile solutions together today.
Constant Clarity: Explore Our Fixed Frequency Filters
Our fixed frequency filters stand as a testament to ongoing excellence in signal management. Specially designed for stable, robust performance, these filters are integral to applications requiring continuous precision. Ideal for industries needing consistent frequency support, they ensure operational efficiency without compromising on quality. Strengthen your systems with our dependable, finely tuned filters and transform stability into your key performance marker. Ready to experience unwavering clarity? Explore the benefits and make your move!
Ultimate Control: Discover Our Innovative Filter Systems
Unleash the full potential of your applications with our innovative filter systems. Engineered for sophisticated performance and precise control, these systems offer a tailored fit for your unique challenges. Whether addressing noise reduction or signal smoothing, our filter systems elevate your processes, delivering robust results that meet the highest standards. Experience unprecedented control and efficiency, ensuring your operations run with the finesse and reliability you demand. Optimize your processes with our expertly crafted filter systems today!
Why is Krohn-Hite Corporation so popular?
Navigating the world of electronic test equipment can be daunting, but we are here to simplify things with our premier range of
fixed frequency filters. Since 1949, we have crafted innovative solutions that address a variety of applications, including our groundbreaking
fixed frequency filters , which have set new standards in efficiency and reliability. Our commitment to quality ensures that each instrument, including our
fixed frequency filters , undergoes rigorous testing to maintain top-grade performance. Serving customers worldwide, we pride ourselves on our "Standard of Value," firmly rooted in exceptional reliability. Choose our
fixed frequency filters to experience durability and precision that stand the test of time in critical laboratory settings and demanding production environments. For more information, visit our
fixed frequency filters page.
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Frequently Asked Questions
Your top questions about Krohn-Hite Corporation, answered.

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SALES
Joe Inglis
President/Sales Manager
508-580-1660
jmi@krohn-hite.com
sales@krohn-hite.com
QUALITY
James Vincent Jr.
VP/Production/QC Manager
508-580-1660
jvincent@krohn-hite.com
SERVICE
Roland Kolz
Service Manager
508-580-1660
rkolz@krohn-hite.com
service@krohn-hite.com
ACCOUNTS RECEIVABLE/PAYABLE
Harold Kimball
Accounts Manager
508-580-1660
hkimball@krohn-hite.com