PYLE-PRO Compact Mini Hum Eliminator Box-2 Channel Passive Ground Loop Isolator, Noise Filter, AC Buzz Destroyer, Hum Killer w/ 2 1/4-Inch TRS Input and Output for 2 Mono /1 Stereo Signal

I added The PHE300 Pyle to my pedal board and it did nothing.I went through the connecting cords to my pedals and found that one of them was causing a lot of hum so I switched it out with a new one and it cut the hum down significantly but a slight hum was still there.Next I added The PHE300 Pyle, I put it right after my distortion pedal, and the hum was, like it says, DESTROYED.I did not have much faith in the The PHE300 Pyle because of the cheap price but Wow, my rig is so silent now, even when I crank my distortion pedal to the max.

I do not get the results shown for this product. The input/output plugs are loose and if you bump the plug in the slightest... you get serious buzz. I can't say that this product work badly for others... just for me. I'm keeping it none the less... because I will figure out why it's plug inputs are loose and fix them myself. It's easier than returning it for an exchange. Made in China does not mean made well. My DOD Gunslinger is made in the USA... and it's works fine without this product... but plug it in and yikes... ground buzz galore.*Update* 6/25/2018... One plug in unit... very bad. I made a choke out of a guitar cable and used it as a patch cord in conjunction with an 8 foot ground rod and ground wire... separate from my electrical panels ground... and got rid of 99% of the hum and ground noise. All that's left is the typical amplifier hiss... which eventually I will get rid of that too.*Update* 8/10/2018 …. now it just buzzes all the time. Does not matter how good the cord is or how well grounded the amp is.Changing my rating to a one star. This product does not live up to it's name. I will never purchase anything with the name PYLE on it again. Total waste of money.This particular product does not do what it was made for. It was cheaply constructed. The plug inputs are less than snug. My 1/4" guitar chord fits in each one of the receptacles but loosely. No snug fit allows for bad ground and buzz and hum. It's junk pure and simple.

It worked!! Wow, I wasn't expecting that. I have a Roland Juno-D synthesizer running through a Berringer XENYX802 mixer and outputting to Berringer K900FX amps. It all worked fine until I connected the keyboard to a Thinkcentre desktop computer. I immediately got what I 'think' was a ground loop hum. I switched out several patch cables, thinking I was getting noise through the cables. I tried connecting the keyboard via a Edirol MIDI adapter. That adapter seemed to quiet the connection a little, but wasn't the setup I wanted. I then ran all the sound components through an APC battery backup, trying to isolate the A/C from in house interference. Next, I tried a higher-end grounded USB-C cable with ferrite cores at the connectors--no luck. I finally connected this PYLE PHE300 box in between the mixer and the amps--BINGO--the hum was gone. I don't know if any of the other stuff I did had much effect, but I've left everything in place. I now have clean sound with practically no noise or distortion.

Compact and perfect for my install. I had a rack of older unbalanced synths I needed to connect to my mixer using a balanced snake. I had a ground loop issue causing hum on 4 synth units plugging directly into the TRS snake that was going to balanced returns on the board. The accumulative hum was bad and annoying, that was a total of 8 channels of hum. I grabbed one of my much more expensive hum eliminators ($80.00) and it removed the hum in one unit. I needed 4-2 channel units and 4 of those would have cost $320.00. These units would only cost roughly $60.00 for 8 channels. I ordered the Pyle Hum Destroyers on Amazon and they arrived the next afternoon. I did a side by side audio comparison test with the more expensive unit, and the results were the same. Zero hum, and in addition like the more expensive unit the Pyle also automatically converts the unbalanced output connections of the synths to balanced out to the board. I found that using a TS cable from the synth actually works better than using a short TRS patch cable which I tried first. The 2 ft. TS cables from the rack mounted synth to the Hum Destroyer worked best, the TRS cable still had a very small amount of hum most likely due to the internal unbalanced jack configuration of the older synth. These were JV1080's. So, unbalanced TS from JV to Hum Destroyer, then out of the Hum Destroyer via TRS balanced snake to the board, hum completely gone. The added benefit is that the Pyle size is more compact, and fits more easily in the back of the rack. I opened one unit and although the construction is less robust than the expensive unit, there are indeed two isolation transformers and a circuit board in an all metal box. They will just stay stationary in the rack so I'm not worried about how they stand up to road abuse. Great value for the money. Used for the correct application these will remove your hum.