No static noise from it at all, just clean, crisp and clear

Sound quality from the unit is excellent, no audible noise is added to the output from the phantom power supply.

Tried a different phantom power supply from a local store and it worked great - no noise.

After 6 months of usage, the power brick is making a really loud hissing noise rendering this product useless.

The static noise cleared

If you have an older onboard sound card that runs on 3v, there will be a lot of static/background noise

Produces horrible background noise in audio recordings

However it also put out a loud heartbeat thumping noise that got louder and louder until it almost turned into a screech

but the last one I received has horrible screeching noises from the box

I even tried it on a working setup and got squealing noises out of it.

If you experience something similar with the loud noise coming through your mic that is not intentional STOP what you are doing and unplug it

It just makes a loud buzzing noise.

but you can still hear them in 10 feet away from the outer loud noises

No static noise from it at all, just clean, crisp and clear

i needed to have a rubber band holding the cords to the side for the cords or else it emits a loud buzzing noise

and suddenly i got this weird static/high pitch noise comming from my MIC

This morning the power LED light began to blink and there is no audio coming out just a loud noise

Then after suddenly discovering a loud screeching noise the LED no longer lights up and it doesn't seem capable of providing power

The box exterior feels better than the standard cheap-o plastic as it will probably get warm with extended use