Resource
Koss
US headphone company whose founder John C. Koss introduced the SP/3, the world's first stereophone, in 1958. Its current range includes the KPH30 and CL3i headphones and USB headsets.
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Family-run in-ear monitor company that started in a spare bedroom and now makes universal and custom IEMs, including the Ocean model, with accessories and service support for musicians and listeners.
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Abyss Headphones
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Luxury headphone maker that has provided audio advice, products and service since 1990 and builds its headphones from scratch at its New York facility. Its range includes the Diana MRx and Diana TC Signature.
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Audeze
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Southern California headphone company built around proprietary planar-magnetic transducers, with separate audiophile, professional and gaming ranges. Its catalogue also includes electrostatic headphones, and the company says its planar-magnetic and electrostatic drivers are manufactured in Orange County.
Audio-Technica
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Japanese audio company whose origins in phono cartridges developed into headphones, turntables and microphones for home and professional use. Its history connects the dual-magnet VM cartridge family with later monitoring headphones and recording products, retaining a substantial analogue-playback focus.
beyerdynamic
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German audio company with a history spanning studio headphones, microphones and consumer listening products. The catalogue now also covers wireless headphones and gaming headsets, while selected headphones and microphones continue to be manufactured at its Heilbronn site.
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Bowers & Wilkins
manufacturer
Bowers & Wilkins offers home loudspeakers, wireless audio systems and headphones, with a product history beginning in 1966. Its speaker engineering includes proprietary cone materials and tweeter designs, illustrated by the Continuum cones and titanium tweeters in the 600 Series.