Edgar van Velzen

beyerdynamic GmbH & Co. KG engages in the manufacturing of audio equipment. Its products include headphones, headsets, microphones, and conference systems, interpreter systems, voting systems, mixer and tour guide system. The company was founded by Eugen Beyer in 1924 and is headquartered in Heilbronn, Germany.

Beyer Dynamic, Inc. manufactures and sells microphones, headphones, wireless, and conference systems for the professional audio community. It offers headphones and headsets for mobile, gaming and multimedia, studio and stage, DJ, interpreter, intercom, broadcast, and television, audiometry, and hearing aid. The firm also offers wireless and wired conference systems, interpreter systems, installed sound microphones, wireless microphones, conference and recording software, and tour guide system. The company was founded on March 15, 1979 and is headquartered in Farmingdale, NY.

Lautsprecher Teufel GmbH engages in the production, marketing, and distribution of audio speakers. Its product portfolio includes floor-standing and wall speakers, subwoofers, receivers, stereo amplifiers, soundbars, WLAN radios, and gaming headsets The firm also offers accessories such as cables, speaker stands, bags, wall brackets, and remote control units. The company was founded by Peter Tschimmel in 1979 and is headquartered in Berlin, Germany.