| | Audio ProAudyon Bang & Olufsen B & C Behringer Bentley Motors Blast Loudspeakers Blaupunkt Bosch, Berlin Canton Chario Creek Audio Crystal Dali
| Davis Acoustic DLS DTU, Denmark Dynaudio Elettromedia FAITAL Fink Audio FOCAL Harbeth, UK Harman, DE Harman, France Harman Auto, UK KEF
| Kurt Müller MB Quart Mission Monitor Audio Mordaunt-Short Musikelec. Geithain NEXO Ole Wolff Electronic Panasonic, UK Pioneer, France Philips, Dendermond Philips, Leuven RCF
| S1nn, Germany Saitek, UK SEAS Tannoy Theis & Vögele Thiel & Partner Triangle TVM, Czech Rep. University of Madrid Vifa Visaton Welcohm
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| | Acoustic Design Adamson Audio Advanced Acoustic American Audio Co. API Audio Plus AuraSound Avalon Acoustics Bose Bravox , Brazil CLCDiamond Audio | DTSystems Eminence Harman/Becker Auto Harman Motive Harman Multi Media Infinity Systems Innovative Fluidics JL Audio KSC Industries La Clef de Sol | Logitech McIntosh Labs Monitor Audio NH Industry Orca Design Paradigm Pioneer, San Diego Pioneer, Pomona Polk Audio PSB QSC Redrock | Rockford Russound Selenium Sonance Sonicraft Acoustics SoundMatters Thiel C. Source Vance Dickason |
| | A & D Audio Co. AAD Engineering Acoustic Sound Advanced Acoustics Advanced Sound Behringer, China Betetech, Australia Blue Tek (Samsung) Bopro Bosch, Malaysia Bujeon, Korea Chiyu CREATIVE Dai-Ichi, Japan Dai-Ichi, Malaysia Dai-Ichi, Philippines Elder Audio Enrique Stiles | Evervictory Foster, Japan FST GGEC Guosheng Guang-Fann Co. Golden Voice Tech. Guangshun Heng Ke Hornsonic Intern. Hosheng IST Co. Ltd. Iwai Jalung Co. Jia Shan Jiefu Juseong College Korea Omyang
| KSY LEADtech Leilo Lilac, Japan Meiloon Microlab Peerless India Philips, Shenzhen Panasonic, Japan Pioneer, Japan Premium , China Qiaojian Reaxt Electronics Sanyou Shinwoo Seoul Nat. University Sinar Baja Solidex
| Sonavox Sun Technique Swan Speakers Taiwan University Taiyu Tanko Tech-Audio Tekzone Tianle Unicond Unicorn University of Taiwan Yamaha Zenmay |