Pricing and availability

We compare 600+ stores and found this item at 6 stores. Prices updated .

Sweetwater
4.0 (19)
$20.90
Guitar Center
3.5 (6)
$20.90
Amazon
4.4 (1949)
$24.99
Amazon Prime
Reverb
5.0 (2)
$20.90 New
$100.00 Used
Thomann
4.5 (841)
$16.60 $16.40 $0.20 · All time low

Price History

Based on price data from 3 merchants for "Behringer HD400 Micro Hum Destroyer". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.

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Description

In the world of live music and recording, unwanted noise can be a true showstopper. Enter the Behringer HD400 Micro Hum Destroyer, your ultimate ally against AC hum and ground loops. This compact, two-channel wonder effortlessly tackles noise from two separate sources, ensuring your audio remains as pristine as your performance. Whether you're switching between a guitar and a keyboard on stage or managing multiple inputs in the studio, the HD400 delivers a seamless and noise-free experience.

Thanks to its passive design, the HD400 requires no additional power supply, making it an ideal travel companion for musicians on the go. The unit's ability to convert unbalanced signals into balanced ones ensures compatibility across various audio systems, elevating your sound without any additional circuitry getting in the way.

The HD400's strength lies in its simplicity and effectiveness. It not only breaks ground loops but also eliminates the hum that often creeps in from AC systems. With its 1/4" TRS connections, you can rest easy knowing your audio is safe from buzz and interference, allowing your true sound to shine through unadulterated.

Key Features:

  • Two-channel hum eliminator and direct box
  • Removes hum caused by AC power or ground loops
  • Converts between unbalanced and balanced signals, with 1/4" TRS connections
  • Completely passive design requires no power supply
  • Perfect for using unbalanced equipment with a balanced audio system

Product specs

Brand Behringer
Model MicroHD HD400 2-Channel Hum Destroyer
Finish Standard
Year 2007 - 2025
Made In China
Categories DI Boxes

FAQs

How does the Behringer HD400 Micro Hum Destroyer eliminate hum?

The Behringer HD400 uses isolation transformers to break ground loops, effectively eliminating hum and buzz from audio signals caused by AC sources.

Can the Behringer HD400 be used with both balanced and unbalanced connections?

Yes, the Behringer HD400 is designed to work with both balanced and unbalanced 1/4" TRS connections, making it versatile for various audio setups.

Does the Behringer HD400 require a power supply to operate?

No, the Behringer HD400 does not require a power supply as it operates passively, which adds to its convenience and ease of use.

Is the Behringer HD400 suitable for live performances?

Yes, the compact design and effective hum elimination make the Behringer HD400 suitable for live performances, ensuring a clean audio signal on stage.

How many channels does the Behringer HD400 support?

The Behringer HD400 supports two channels, allowing you to eliminate hum from two separate audio sources simultaneously.

Mike Russell

Mike Russell

Eliminate Hiss & Hum: Behringer MicroHD HD400 Hum Destroyer

Video thumbnail for Eliminate Hiss & Hum: Behringer MicroHD HD400 Hum Destroyer by Mike Russell

Eliminate Hiss & Hum: Behringer MicroHD HD400 Hum Destroyer

Mike Russell

Mike Russell

Video thumbnail for Wie funktionierts? Mit dem Behringer HD400 Brummschleifen entfernen Tutorial German by SunFinCol

Wie funktionierts? Mit dem Behringer HD400 Brummschleifen entfernen Tutorial German

SunFinCol

SunFinCol

Video thumbnail for Behringer MicroHD HD400 Review and Audio Test by JeffreySchmidtMusic

Behringer MicroHD HD400 Review and Audio Test

JeffreySchmidtMusic

JeffreySchmidtMusic

Video thumbnail for Behringer MicroHD HD400 Hum Destroyer Unboxing Behringer HD400 German by SunFinCol

Behringer MicroHD HD400 Hum Destroyer Unboxing Behringer HD400 German

SunFinCol

SunFinCol

Video thumbnail for Behringer HD400 hum destroyer, no more ground loops, ground hum, digital noise, 50/60hz hum by Fergie's Guitar stuff

Behringer HD400 hum destroyer, no more ground loops, ground hum, digital noise, 50/60hz hum

Fergie's Guitar stuff

Fergie's Guitar stuff

Reviews

Owner Insights

We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Behringer HD400 Micro Hum Destroyer.

Features and functionality

  • The HD400 uses transformers to isolate and eliminate ground loops, effectively balancing unbalanced input signals for improved audio quality.

    Source
  • The HD400 automatically converts unbalanced signals to balanced output, which is crucial for reducing noise in setups with mixed cable types.

    Source

Setup and maintenance

  • Users recommend using balanced cables from the HD400 to other devices for optimal noise reduction, while unbalanced cables can be used for input without major issues.

    Source
  • Integrating a hardware volume knob like a "studio monitor controller" can help manage volume and reduce noise when used between a PC and speakers.

    Source

Use cases and applications

  • The HD400 is particularly beneficial in setups where amplified speakers are directly controlled by the computer's software volume, helping to manage noise levels.

    Source

Comparisons

  • Users equate the HD400 to a DI box, emphasizing its role in isolating signals to prevent interference, similar to higher-end equipment.

    Source
  • An owner mentions a 2 dB difference at 12 kHz, 500 Hz, and 40 Hz after using HD400, compared to measurements found in an online forum.

    Source

User experience

  • Some users report a slight perceived reduction in realism and instrument visualization when HD400 is in use, despite effective ground loop elimination.

    Source
Add

4.5 out of 5

Based on 3 Reviews and 6 Ratings

5 star
4 star
3 star
2 star
1 star
dorgsan

Am I doing something wrong?

In my experience, depending on the placement in signal chain it either do nothing or reduces noise level by cutting high end frequences from the signal

jimmarchi1

so like the ebtech hum eliminator its also a sound eliminator?

dorgsan

For me it is a sound eliminator. But everybody keep saying there is no loss of signal

enorthby

Amazing little product

Plugged in the cables and then there was silence! Oh wonder of it all! And why are these not built into every set of studio monitors on the planet!

andreabertolinidj

BEHRINGER HD400 Micro Hum Destroyer

Viable if you have ringing

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