Ultrasone is a German headphone manufacturer founded in 1990 by Florian M. König, headquartered in Tutzing, Bavaria. The company specializes in high-end headphones for studio, DJ, and audiophile use, and is best known for its proprietary S-Logic technology — a decentralized transducer positioning system designed to spread sound across the outer ear, simulating a more natural speaker-like listening experience. Ultrasone also incorporates ULE (Ultra Low Emission) shielding in many of its models, which the company claims reduces electromagnetic radiation by up to 98% compared to conventional headphones.

Ultrasone's product range spans several tiers. The Edition series sits at the top, with flagship models like the Edition 15 Veritas and Edition 8EX targeting discerning audiophiles. The Signature series — including the Signature MASTER and Signature DJ — bridges professional and high-end consumer use. The company also produces the PRO line and HFI series for studio monitoring, as well as dedicated DJ headphones like the DJ1. More recently, the LAPIS earbuds represent Ultrasone's entry into the in-ear market.

Ultrasone headphones have found favor among DJs and musicians, with artists such as Richie Hawtin and Datsik spotted using the DJ1 in live performance settings. The brand manufactures its products in Germany and emphasizes sustainable business practices, including solar-powered production facilities in Bavaria.

Ultrasone has 21 products cataloged on Equipboard, including Headphones & In-Ear Monitors. Their gear is featured by 9 artists, with the strongest followings in Electronic, Rock, and Pop. Notable users include Seven Lions, Matthew Bellamy, and Chris Wolstenholme.