Stereo Equalizer brands

Alesis
Alphasonik
Alpine
Aphex Systems
ARC Audio
Ashly
Atlas Sound
Audio Authority
AudioControl
AudioSource
Audiovox
BBE
Behringer
Blitz Audio
Bogen
Boss Audio Systems
Boston Acoustics
Cadence
Chauvet
Clarion
Crate Amplifiers

dbx Pro
Dell
Denon
Directed Audio
Directed Electronics
DOD
Dynacord
EarthQuake
Electro-Voice
Extron electronic
Furman Sound
Gemini
Hafler
Harman
Harman-Kardon
Intermec
iOptron
JBL
Kathrein
Kenwood
KitchenAid

Klark Teknik
LA Audio Electronic
Lanzar Car Audio
Mackie
Manley Labs
Matrox Electronic Systems
Meyer Sound
Mitsubishi Electronics
Nady Systems
Nilfisk-ALTO
Panasonic
Parasound
Peavey
Pelco
Petsafe
Pioneer
Power Acoustik
Precision Power
Presonus Audio electronic
PYLE Audio
Pyramid Car Audio

Pyramid Technologies
Radio Shack
Realistic
Roland
Rolls
Rotel
Samson
Samsung
Sharp
Shure
Solid State Logic
Sound Performance Lab
Soundstream Technologies
Tapco
Telex
Viking Electronics
Vizio
VocoPro
Waves
Xtant
Yamaha