I had a real problem previous to this with my on board phantom power generating an ungodly loud Hum noise and this

Low noise, cheap, comes with decent cables

The sound quality is terrible there is a unbearable constant hissing noise

I used it on my Tonor Condenser Mic (The power supply was out of stock and I needed phantom power as soon as possible) and it didn't do a thing but add a very loud ringing noise that didn't display as static

Unshielded, creates an annoying noise superimposed over the mic cable, creates a hum in the audio when near other equipment, metal case has very sharp edges and is actually hazardous, I actually CUT MY HAND just by picking up the unit, as the sharp edges all over it are like picking up a porcupine

However, I could not for the life of me get rid of this underlying hissing noise from the mic whenever I talked

No noise interference or distortion through this 48 volt, single channel box

With a transfer device, it works well with my microphone and does not have a bad noise impact

Horrible buzzing noise when using Audio tech 2020

Loud background noise

Opened the box plugged everything in only to have a very loud whining noise

But the power brick makes some quiet noise.

As effective as the ad claims, it doesn't introduce any noise and can improve the audio output quality

Powered the mic, but had terrible, loud hissing noise once I heard back my voice recording

Worst audio quality than something that produces worse background noise than this

Bought a second one this week to replace an old PPS that gave up the ghost, this one has terrible buzzing noises (around 60Hz

Crystal clear no electromagnetic noises.

Mic works great with other phantom powered things like my recorder and amp....but this unit has nothing but a loud white-noise which is louder than the signal from the microphone itself

No noise and levels are great

WorksDoes produce noise, but audacity works for removing that.

Pretty much makes my audio useless because the noise is so overpowering, there is no way to minimize it or make it go away

i really like the nw 100 .works great with the Neewer nw 800 microphone