Bang & Olufsen is a Danish audio company known for their A8 earphones which produce brilliant sound and have a great design. Bose pioneered noise-cancelling headphone technology and sells a variety of headphone models. Dr. Dre's Beats Studio headphones were released in 2008 and use an amplifier with active noise cancellation powered by AAA batteries.

1. Sound EffectsBang & OlufsenBoseDR. DreBy. Khaleb, Kyle lee, A.J

2. EarphonesBang & Olufsen (A8)Bang & Olufsen (B&O) is a Danish company that designs and manufactures audio products, television sets and telephones.Brilliant sound Great looks

3. Bose HeadphonesBose headphones are a family of headphone products sold by the Bose Corporation. The company was a pioneer in the development of headphones that use active noise cancellation technology.

4. DR. Dre headphonesBeats By Dr. Dre is a brand of headphones and loudspeakers created by musician Dr. Dre ,The original are the "Studio" headphones released in 2008, which are an over-the-ear type headphone that incorporate a high-power digital amplifier and powered noise-cancelling requiring the use of 2 AAA batteries to operate.