”Acoustic, ADS, Akai, Alesis, Alpine, Atlas, Atomic, Audix, Audio Research, Audio Select, Bang&Olufsen, Becker, Black Shadow, Bose, Boston Acustics, Braun, B&W, Bumper, Cannon, Carver, Carvin, , Celestion, Cerwin Veg, Community, Caustic, Crate, Crunch, CTS, Dahlqvist, Dynadio, Dayton, DCM, DCC, Delco, Dukane, Ear Candy, Eden, Emerson, Emilar”

”Eminence, Energy, ER, ESS, Fane, Fender, Ficher, Foster, Galaxy, Gemini, Gibson, Goldwood, Grundig, Harman Kardon, Harje, Heppner, Hitachi, Infinity, JBL, Jannson, Jensen, JL Audio, JVC, Kendrick, Kenwood, Kustom, Phillips Pioner, Polytone, Pro drivers, Pyramide, Quam, Randell, Rola, Rolland, RSR, RCF, Sansul, Sanyo, Standfor, Tannoy, University, Yamaha”