- HTD
- Infinity
- InFocus
- Jamo
- JBL
- JL Audio
- JVC
- J. W. Davis
- KEF
- Kenwood
- Klipsch
- Konka
- Krell
- Leviton
- LG
- Linn
- Loewe
- Logitech
- Loud Technologies
- Lumagen
- Lutron
- Mackie
- Marantz
- Mark Levinson
- McIntosh
- Meridian
- Mintek
- Mirage
- Mitek (MTX)
- Mitsubishi
- Naim
- Niles
- Norcent
- Nuvision
- Olevia
- Onkyo
- Optoma
- Oracle
- Orion
- Outlaw Audio
- Panamax
- Panasonic
- Paradigm
- Parasound
- Pass Labs
- Peavy
- Phase Technology
- Philips
- Pioneer
- Planar Systems
- Polaroid
- Polk
- Pro Dynamics
- Proton Corporation (not the same as Protron)
- Protron (Not the same as Proton)
- Proview
- PS Audio
- QVS
- RCA
- Remote Technologies Inc. (RTI)
- ReplayTV
- Rotel
- Runco
- Russound
- SVS
- Samsung
- Sanyo
- Savant
- Seas
- Sencore
- Sennheiser
- Sharp
- Sherwood
- Shure
- Silicon Optix