Top-Rated HUM Suppressors to Eliminate 60Hz Line Noise 60Hz line noise is the enemy of clean audio. That low-pitched background buzz often comes from ground loops, AC power lines, or poorly shielded cables. If you are hearing this frustrating hum in your home theater, studio, or live sound rig, a dedicated hardware hum suppressor is the fastest and most effective solution.
Below are the top-rated hum suppressors on the market designed to instantly eliminate 60Hz line noise. Best Overall: Ebtech Hum X Voltage Hum Filter
The Ebtech Hum X is the industry standard for filtering out low-voltage ground loops right at the power source. Unlike dangerous ground-lift adapters, it maintains a safe, unbroken ground connection.
How it works: Plugs directly into the AC outlet before your equipment’s power cord.
Best for: Guitar amplifiers, active studio monitors, and PA systems.
Key benefit: Exterminates the hum without degrading your audio signal path.
Best for Line-Level Audio: Morley Line Level Eliminator (MHE)
If the 60Hz hum is traveling through your audio cables rather than your power lines, the Morley MHE (formerly Ebtech) is your best bet. It features two channels of isolation transformers to break ground loops in audio signals.
How it works: Connects inline between your audio source and your mixer or interface.
Best for: Connecting laptops, DJ gear, or keyboards to professional sound systems.
Key benefit: Automatically converts balanced and unbalanced signals using ⁄4” and XLR jacks. Best Budget Solution: Behringer MicroHD HD400
The Behringer HD400 is an incredibly affordable, ultra-compact two-channel hum destroyer that punches well above its weight class.
How it works: Uses internal isolation transformers to break the ground loops between components.
Best for: Home studios, podcasters, and budget-conscious musicians.
Key benefit: Provides two independent channels to clean up stereo signals simultaneously.
Best for Pro Audio & Rack Mounts: ART DTI (Dual Transformer Isolator)
The ART DTI is a rugged, passive problem-solver built like a tank for touring professionals and permanent rack installations.
How it works: Employs high-quality audio transformers to completely isolate input and output grounds.
Best for: Live sound setups, fixed AV installations, and linking front-of-house mixers to amplifiers.
Key benefit: Offers ultimate connectivity with XLR, ⁄4”, and RCA inputs and outputs. How to Choose the Right Suppressor
To pick the right tool, you must first identify where the noise is entering your system:
AC Power Level: If the hum disappears when you unplug a specific device’s power cable, the issue is at the wall outlet. Use a power-line filter like the Ebtech Hum X.
Signal Line Level: If the hum only happens when two specific audio devices are connected via audio cables, use an inline transformer isolator like the Morley MHE or Behringer HD400. If you want, I can:
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