- Acoustic Research - United States
- Advent - United States
- Ahuja - India
- Alesis - United States
- Altec Lansing - United States
- Amphion Loudspeakers - Finland
- Armstrong Audio - United Kingdom
- Audiovox - United States
- Audison - Italy
- Auro-3D - Belgium
- Bang & Olufsen - Denmark
- Barefoot Sound - United States
- Behringer - Germany
- Blaupunkt - Germany
- Bosch - Germany
- Bose - United States
- Boston Acoustics - United States
- Bowers & Wilkins - United Kingdom
- Bozak - United States
- Burmester Audiosysteme - Germany
- Cabasse - France
- Canton Electronics - Germany
- Castle Acoustics (now Castle) - United Kingdom
- Celestion - United Kingdom
- Cerwin-Vega - United States
- Clair Brothers - United States
- Clair Global - United States
- Clarion - Japan
- Community Professional Loudspeakers - United States
- Creative - Singapore
- d&b Audiotechnik - Germany
- DALI - Denmark
- Definitive Technology - United States
- Denon - Japan
- DEQX - Australia
- Devialet - France
- Duntech - Australia
- Dynacord - Germany
- Dynaudio - Denmark
- Eastern Acoustic Works - United States
- Edifier - China
- Elac - Germany
- Electro-Voice - United States
- Epos - United Kingdom
- Focal-JMLab - France
- Fostex - Japan
- Funktion-One - United Kingdom
- Genelec - Finland
- Harman Kardon - United States
- Infinity - United States
- Jamo - Denmark
- JBL - United States
- Jensen - United States
- JL Audio - United States
- JVC - Japan
- K-array - Italy
- KEF - United Kingdom (brand)
- Kenwood - Japan
- Kharma International - Netherlands
- KLH - United States
- Klipsch - United States
- Krell Industries - United States
- KRK - United States
- Kustom - United States
- L-Acoustics - France
- Legacy Audio - United States
- Linn - United Kingdom
- Lipinski Sound - United States
- Logitech - Switzerland and United States
- Mackie - United States
- Magnat - Germany
- Magnepan - United States
- MartinLogan - United States
- McIntosh Laboratory - United States
- Meridian Audio - United Kingdom
- Meyer Sound Laboratories - United States
- Mission - United Kingdom (brand)
- Mitek/MTX - United States
- Monitor Audio - United Kingdom
- Mordaunt-Short - United Kingdom
- Naim - United Kingdom
- NHT Loudspeakers - United States
- Onkyo - Japan
- Oswalds Mill Audio - United States
- Panasonic - Japan
- Peavey Electronics - United States
- Philips - Netherlands
- Pioneer - Japan
- PMC speakers - United Kingdom
- Polk Audio - United States
- ProAc - United Kingdom
- PSB Speakers - Canada
- QSC Audio Products - United States
- Quad Electroacoustics - United Kingdom (brand)
- Radio Shack - United States
- RCF audio - Italy
- Rectilinear Research Corporation - United States
- Rega Research - United Kingdom
- Renkus-Heinz - United States
- ReVox - Switzerland
- Rogers International - United Kingdom (brand)
- Sansui - Japan
- Shermann Audio - United Kingdom
- Sherwood - United States
- SMS Audio - United States
- Snell - United States
- Sonodyne - India
- Sonus Faber - Italy
- Sony - Japan
- Spendor - United Kingdom
- Tannoy - United Kingdom (brand)
- Technics - Japan
- Teledyne - United States
- Telefunken - Germany
- Teufel - Germany
- Thiel Audio - United States
- TOA Corp. - Japan
- U-Turn Audio - United States
- Velodyne Acoustics - United States
- Veritone Minimum Phase Speakers - United States
- Wharfedale - United Kingdom (brand)
- Wilson Audio - United States
- Wilson Benesch - United Kingdom
- Yamaha - Japan
- Yorkville Sound - Canada
- ZR Speaker Lab - Slovenia
- Zu Audio - United States
