SoundMagic HP100 Closed Back Headphones. SoundMagic is a company that has made its way into the hearts of headphone fans by producing affordable earphones that sound a lot better than their modest prices would suggest. SoundMagic are now spreading their wings with the introduction of the SoundMagic HP100s which are the company's first full-size over-ear headphones. That's pretty hard to believe as they have managed to come up with something pretty special. Buy this SoundMagic HP100 Closed Back Headphones Was £149.00 Now £134.10.