Pyle Compact Mini Hum Eliminator Box - 2 Channel Passive Ground Loop Isolator, Noise Filter,AC Buzz Destroyer, Hum Killer w/ 1/4" TRS Phone,XLR Input/Output, Uses 1:1 Isolation Transformer

There can be many causes of hum / noise in a piece of equipment: * Bad equipment * RFI / EMI (radio frequency or electromagnetic interference) * Bad line power * Guitar-cord related ground loop (most common in guitar / microphone / amp situations) This item works dandy if you are experiencing a ground loop problem. There is a very easy way to test for this too: if you have a guitar amplifier that has unwanted hum / noise, simply unplug the guitar cord. If you're having a cord-related ground loop problem, the hum will vanish. Plug the cord back in, hum returns. That problem is exactly what this is for. Plug you guitar or microphone cord into the "in" jack, plug another into the "out" jack and to your amplifier, and this cleans it up well. An inexpensive and efficient solution. If your noise problem is caused by one of the other factors, that's not what this is designed to fix. You may need the more expensive Hum X or similar device to handle a socket-based ground loop or noise problem, or if it's a problem with electrical noise or RMI/EMI problems, you may need a pricey power conditioner. 3-prong amplifiers: A way to test for socket-based ground loop issues is to use a prong adapter-- one of those orange or gray cheap things that converts a 3 prong plug into a 2 prong. This is for TESTING only as continued us can cause problems (there's a reason your amp has 3 prongs). Plug the amp into the adapter, plug the adapter into your electric socket, and if the hum vanishes a device like the Hum X will fix the problem. Avoid the temptation to just keep using the cheap prong adapter. It removes the grounding of the amp, and is a good way to burn out an amp or even cause a line fire. Of course if your amp only has 2 prongs in the first place, this doesn't apply at all. Bottom line: if the hum is caused by issues between the guitar and amplifier-- such is very easy to check by simply removing the guitar cord-- and this product will fix that. Note that if you have a serious issue with your guitar electronics or pickups, that may require repairing. But in my case this relatively inexpensive solution nearly zeroed my hum issues. Very pleased that it worked for me. If it doesn't work for you-- at least you'll have nice clean guitar line flow and you can look for other causes for hum.

My setup is a Motu M4, a Yamaha HS10 woofer, and two Yamaha HS8 monitors connected with TRS cables. I originally used an iDefender+ on the USB-C connection to my Motu M4 to deal with noise. It significantly reduced the noise, but I still had a low hum. I removed the iDefender+ and installed the Pyle PHE400. The hum is gone along with the other noise the iDefender+ was stopping. Very effective and recommended.

Gets the hum out. Best used in the amps effects loop. Now, realize this is a very budget device, and it gives a comparable performance. I also have used an extra set of patch cables to loop it through twice as I have just filthy electricals.

I have a stereo guitar rig, with two digital/solid state amps (quilter interblock 45 & fender tone master deluxe) I have a ground loop hum since I’m running it stereo, and read up on a few solutions. This seemed to be the most cost effective so i thought I’d start here. Firstly I saw some reviews where people have had quality control issues. For this price point that’s to be expected, luckily Amazon makes returns/exchanges very simple. I have not experienced any QC issues as of yet. Pros: This unit did solve my ground loop hum issue, for a good price at that. Seems to be made well, and could last a while if not thrown around. Cons: it majorly effects your tone. My amp sounded like it had a pillow over it. Now most my think this is a deal breaker, but I was able to mess with the eq and volume on my amp to make it suitable. Usually on my fender I use the normal channel. The vibrato channel is a bit brighter and by messing with the eq and volume I could get a pretty similar tone to my original. Usually I have my treble & bass around 5/6, with this unit in the signal chain, I have to put my bass at 9 and treble close to 10, plus I had to turn the volume up a bit to compensate for a little level loss. I most likely will look for a permanent solution that doesn’t effect the tone as much (and it’ll probably be expensive), but this is a decent solution at a good price for now. I also haven’t tested this with all my gain pedals, which I will soon but so far I’m ok with the results.

I read reviews that were positive, so I got this. Not only did it not remove the slight hum from my bass, but it actually made the humming WAY worse! My guitar only hummed when I was not touching any metal. With the volume down, zero sound. This box made it hum loud with the guitar volume all the way off. I have no explanation, but this is going back.

Plugged in and drastically reduced my ground loop hum. Solidly constructed and compact form factor for a minimal design. There might be some noise generated from the class D amplifiers in my speakers, but that awful hum is gone! Just a soft powered whisper like the wind remains. This thing is plug and play and passive, cannot recommend enough for the price point. Great buy!

My Avantone Mixcubes were causing all of my monitors to hiss. I put this little gadget between my Mixcubes and the monitor controller and it killed 99% of the noise. Now I can only hear it if I stick my ear up to the cone. This is an effective and inexpensive solution.

This is a great device for an even better price. I need audio isolation transformers to test certain functions for different pieces of gear at my job. We use Whirlwind ISO-XL’s which are awesome, but are very expensive at $80 new for a single transformer. This device was a fraction of the price, came with two transformers, and is great build quality. These will allow you to create passive mixers, balancing circuits, and more. Just as an example, I use this device to isolate one half of a Y cable split when testing a Whirlwind 58 channel isolated splitter box using an audio interface and a multimeter. With one of these isolation transformers, I am able to simultaneously test the splitter through Open Sound Meter as well as have an alternate test for the ground lift which is utilizing the continuity test on the multimeter. Enough nerd talk, I approve of this purchase.