Also blocks out the outside noise very well

Decent noise cancelling too

At high volume, you will notice static noise.

One of them has a creepy noise when connected to my audio interface which is 6 meters far away from the vocal booth!

If I move or jostle the connector at all, it will make some rough noises and sometimes the left channel will cut out completely.

They have a V-shaped sound signature and isolate noise well

"Total Sound Quality" & Noise Reduction, Especially Loud in Low Volume !!

so when you twisted in the 3.5mm jack in whatever you plugged it into you would hear awful noise

I got a really strange crackling noise when used with my iPhone 6

Granted, this is partially the fault of the recorder for not rejecting headphones noise in the circuitry, but it's a huge minus nonetheless.

Really bad scratchy noise

zero outside noise.....highly recommend.

Shoddy materials and manufacturingLess noise isolation than an average pair of $10 earbudsDrastically inferior to identically priced productsI would not recommend this product to a friend.