Audio manufacturers
- Bastl Instruments
- Baton Rouge
- BBE
- Beat Magazin
- Beatsurfing
- Bechstein
- Beetronics
- Befaco
- Behringer
- Bela.io
- Benchmark
- Benson
- Bergerault
- Bernd Hiller & Sohn
- Besson
- Best Service
- Bettermaker
- BetterSax
- Beyerdynamic
- BFD
- Biamp Systems
- BirdDog
- Bitwig
- Black Corporation
- Black Lion Audio
- Black Mountain
- Black Swamp Percussion
- Blackmagic Design
- Blackstar
- BLEASS
- Blocki
- Blue Cat Audio
- BluGuitar
- Blüthner
- Blüthner Haessler
- Bogren Digital
- Bolin
- Bome
- Bone Drums
- BOOM Library
- Boredbrain Music
- Boris FX
- Bosch
- Bose
- Bose Professional
- Boss
- Botex
- Boz Digital Labs
- Brainworx
- Breedlove
- Bricasti Design
- BSS
- Bubblebee
- Buchla
- Buffet Crampon
- Bugera
- Bulgheroni
- Bumblebee Ukuleles
- Burl Audio
- ButtKicker
- BUTTRFX
- C. Bechstein
- C.G.Conn
- Caballero by Manuel Rodriguez
- CAD Audio
- Canon
- Carbec
- Carl Martin
- Caroline Guitar Company
- Caruso
- Carvalho
- Cascha
- Casio
- Catalinbread
- Catchbox
- Celemony
- Cerveny
- Chameleon Labs
- Chandler Limited
- ChangeMaker
- Chaos Audio
- Charvel
- Cherry Audio
- Chester
- Citadel
- Clarke
- Clavia Nord
- Clear Tune Monitors
- Clearsonic
- Cloud Microphones
- CME
- Cole Clark
- Coles
- Collision Devices
- Conductive Labs
- Conrad Götz
- Cordoba
- Cornerstone
- Cornford
- Cort