---
product_id: 14756691
title: "HE-2-XLR Hum Eliminator 2-Channel Box with XLR Jacks"
brand: "ebtech"
price: "A$0"
currency: AUD
in_stock: false
reviews_count: 7
url: https://www.desertcart.com.au/products/14756691-he-2-xlr-hum-eliminator-2-channel-box-with-xlr
store_origin: AU
region: Australia
---

# Passive Device 1:1 Isolation Balanced/Unbalanced HE-2-XLR Hum Eliminator 2-Channel Box with XLR Jacks

**Brand:** ebtech
**Price:** A$0
**Availability:** ❌ Out of Stock

## Summary

> 🎶 Say Goodbye to Noise, Hello to Clarity!

## Quick Answers

- **What is this?** HE-2-XLR Hum Eliminator 2-Channel Box with XLR Jacks by ebtech
- **How much does it cost?** A$0 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/14756691-he-2-xlr-hum-eliminator-2-channel-box-with-xlr)

## Best For

- ebtech enthusiasts

## Why This Product

- Trusted ebtech brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Smart Jack Design:** Equipped with 1/4” smart jacks and XLR jacks for seamless integration.
- • **No Power, No Problem:** Enjoy hassle-free operation with this passive device—no power required!
- • **Versatile Connectivity:** Compatible with both balanced and unbalanced signals for ultimate flexibility.
- • **Eliminate Hum Effortlessly:** Simply plug between devices to banish unwanted noise.
- • **Transform Your Audio Experience:** 1:1 isolation transformers break loop antennas for crystal-clear sound.

## Overview

The HE-2-XLR Hum Eliminator is a 2-channel audio device designed to eliminate hum and noise by using 1:1 isolation transformers. It features both 1/4” smart jacks and XLR jacks, allowing for versatile connectivity with balanced and unbalanced signals, all without the need for external power.

## Description

Eliminates ground loop hum. Just connect the HE-2 in between the offending pieces of equipment and your done. Also converts balanced and unbalanced signals. 2 channel box with XLR jacks too. .

## Features

- Simply plug between the offending pieces of equipment to eliminate hum
- Uses 1:1 isolation transformers to break loop antenna and balance audio lines
- Also converts balanced and unbalanced signals
- 1/4” smart jacks and XLR jacks
- Passive device No power required

## Images

![HE-2-XLR Hum Eliminator 2-Channel Box with XLR Jacks - Image 1](https://m.media-amazon.com/images/I/91bChX3N6EL.jpg)
![HE-2-XLR Hum Eliminator 2-Channel Box with XLR Jacks - Image 2](https://m.media-amazon.com/images/I/912vNEt5coL.jpg)
![HE-2-XLR Hum Eliminator 2-Channel Box with XLR Jacks - Image 3](https://m.media-amazon.com/images/I/912vNEt5coL.jpg)
![HE-2-XLR Hum Eliminator 2-Channel Box with XLR Jacks - Image 4](https://m.media-amazon.com/images/I/31Eq+gV-QxL.jpg)

## Questions & Answers

**Q: Will this work with a looper going into the amp FX loop?**
A: It should.  It isolates the input from the outlet so it should eliminate a hum from the ground loop.  Try to isolate the problem to a specific effect/cable before deciding where to add this to your mix

**Q: Can a 1/4 inch input and XLR output on the same channel?**
A: Yes.  I have done this.  
It works fine using the 1/4" input and XLR output of each channel.   OR 1/4" IN to 1/4" OUT.   

The pair of internal isolation transformers appear to work just fine in reverse too because it's just a passive device with no active electronics.
I tested this and it quiets a hum connecting it either way.  By coming IN the jack labeled as output, or coming out the 1/4" input. 

It all worked.  
It's not really IN and OUT exactly since it's in parallel.  
It just has convenient labels to the average person hooks it up right.  

Looking at the internal circuit it's just parallel XLR/ 1/4" jacks passed through a decent pair of quality audio transformers with a couple caps and resistors.  
All combinations of connections I tried work fine.

Naturally you can't connect 2 devices to 1 channel of the output at the same time as that would lower the levels.  
So, use both channels.    

I measured no insertion loss by running through it.  It's less than 1dB if any.
It's a bit spendy for how simple it is, but it's well made.

**Q: I have a long 1/4” stereo cable run from one mixer aux out to another’s aux in. can i run this in between? are the 1/4 ins stereo too?**
A: The 1/4" jacks are not each stereo.   
But, there ARE 2 channels.   So, yes, it's intended to handle normal 2 channel stereo audio by using both channels. 
Each channel has it's own audio isolation transformer that does eliminate any ground loop current and noise completely.  

If the equipment and all connected gear and cabling is already silent with no hum then this will make no difference.
If you have noise from faulty gear (old buzzing/humming tube amps) they may still hum.   
If you have gear and amps that hum when connected to other gear this really helps most of the time. 

Don't try adding it between a passive, low level mic and an amp.  That has no purpose and only adds noise. 

It's meant to go between grounded gear such as your mixer Aux to other gear a you asked about.   
IF you have hum from doing that, yes, very likely this will help a lot. 

This is a better solution than the ground lift products including Ebtech's own HumX device that lifts the ground, runs a resister to make it look like it's still grounded and has a pair of diodes to clamp ground voltages to below 0.6V.  The Ebtech HE-2 XLR has real audio isolation transformers that cut the hum and your equipment ground is still properly grounded.

**Q: Will this work for running one guitar through two amps**
A: If your question relates to the (2) outputs on this Ebtech, NO; the 1st (of 2) inputs will not drive BOTH outputs, hence drive two amps. However, you can use a Y-Adaptor (either on the Input side [1/4" Mono TS Female to 2 X 1/4" Male Mono TS Y Splitter Cable] OR the Output side [Hosa YPP-111 1/4" TS to Dual 1/4" TSF Y Cable] ) and isolate the hum-reduction to each amp, depending on whether you use the Y-Adaptor on the input side (or not). Hope that clarifies.

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Lived Up To Its Name!
  

*by P***S on Reviewed in the United States on February 25, 2017*

Finally, a product that does what its name implies! I was doing a play at a local middle school. We brought our own audio mixer and plugged its outputs into two channels on the school's rack-mounted mixer which was just off stage. Both of our channels had a significant hum, one much worse than the other. We tried all the usual tricks: making sure all devices had a common power ground; activating the low frequency cut-off filters on all channels; using ground lifters on the inputs; a few other things. Most of those helped, but the hum just would not go away.In a bit of desperation, I bought one of these. I say "desperation" because, in the world of theatre tech, I am learning that if you have a problem with the name "X," and someone offers to sell you something called an "X Solver," or similar label, you are often being offered a way to waste some money.Not this time. The Hum Eliminator eliminated our hum. (You could still hear a tiny bit, probably inherent to our amplifiers, but you had to put your ear on the speaker grille to notice it.)Internally, it is two audio transformers, each with an isolated ground for its primary and another isolated ground for its secondary winding. The result is that your balanced audio signal is passed by induction from one side to the other, but there is no ground path from one side to the other. This is a lot like having a ground lift, but better, because it also doesn't pass any DC bias that might be on the signal lines. There are also a few resistors and a couple of capacitors in the networks, which I believe are for audio shaping (the transformers probably lose a bit more of the low frequencies than of the high ones; it appears to me that the extra components taper off the high frequencies on the output side so that the frequency response of the whole network remains pretty flat).I would also note that the two transformers are mounted at right angles to each other. I believe this is to prevent cross-talk that would otherwise arise from the audio on the primary of one transformer being induced into the secondary of the other transformer. That's the sign of a product made by someone who knows what they are doing.If you know your hum problem originates somewhere upstream of a given point, try inserting one of these at that point. If your hum problem originates downstream of that point, this gadget won't solve it. So, be sure you know where the hum gets into your system. Also, as the included instructions direct, do not put this thing between the output side of an amplifier and your speakers. It's designed for signal power levels only, not amplified levels.It's a good device that solved the hum problems I had.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    A gift -- an absolute GIFT!
  

*by K***E on Reviewed in the United States on May 8, 2011*

Designing sound for a production at a local theatre, I was delighted to find that I would be working with first-rate equipment, including a brand new digital mixer. Once I hooked-up the system, though, the nightmare began: There was hum. A lot of hum. Deafening hum.We called in an electrician to verify that the building was properly grounded -- and he said it was. A local music store rented us a "power conditioner" to see if it would make a difference and it did -- but only a slight difference. I then purchased and ran brand new shielded cables. No change.At my wit's end, I found this device on Amazon and thought, "well, if it doesn't work I can always return it..."It worked. Like a charm. Every last bit of hum was removed from the system -- AND the buzz from the stage lighting system vanished, as well! It's amazing. It's magical.My only question is, "Why didn't I know about this sooner?"

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Try this: put your PC into "Power Saving" mode
  

*by A***M on Reviewed in the United States on September 11, 2018*

Did that attenuate 90% of your noise? It did for me.Unfortunately, it was also a huge performance drop for my PC, and there was still a hint of the old distortion. Obviously, not an ideal lasting solution, but if this works for you, then there's a great chance our noise problems have a cause in common.I have a beefy self-built PC running a USB Scarlett 18i8, which outputs balanced TRS cables to an active Yamaha sub and HS80M monitors. Since the day I unboxed my monitors, they haven't been able to sit quietly, even with nothing happening. There was a constant whisper of a sound, which got worse the more the processing load increased. Move the mouse, buzzzzzzzz. Load a project or flatten something to audio, GRIIIIIIIIIND. Lots of spontaneous distortion on complex sounds and tracks, too.A real nonstop kick in the beanbag, to have so much expensive audio gear make itself sound ugly. If you're here, I'm sure you know the feeling.After years of trying and failing to build a tolerance to the noise, I stumbled on the "Power Saving" trick and finally was able to have an effect on the issue. From a technical standpoint, I still don't know what happens or why (something something ground loop...), but after verifying that particular symptom, it was suggested to try a hum box, so I scooped this one up and crossed my fingers.Welp... it works. Simple as.Passively patched in between my soundcard and my sub, this unit completely scrubbed my signal of all distortions and hum. I was worried about complications from the active sub being on a separate, unconditioned power circuit, but the stages after the eliminator did not reintroduce the noise at all.I see a lot of reviews 1-starring this unit because their interference was caused by something else, so please try the "Power Saving" trick to see if there's a chance that you and I are experiencing the same flavor of problem; if we are, you can feel that much more confident taking a chance on this unit, or one like it.

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-02-19*