Brands
- Black Cat
- Black Diamond Racing
- Black Mountain Cable
- Blue Circle
- Blue Rose Audio
- Bluesound
- BMC
- Bob's Devices
- Bohlender
- Bose
- Boston
- Boston Acoustics
- Bottlehead
- Boulder
- Bowers & Wilkins
- BPT
- Brodmann Acoustics
- Bryston
- Burmester
- Burson
- C.E.C.
- C3 Audio
- Cabasse
- Cabledyne
- Cairn
- California Audio Labs
- California Audio Labs (CAL)
- Calyx
- Cambridge
- Cambridge Audio
- Cambridge Soundworks
- Canare
- Canton
- Capriccio
- Cardas
- Cardas Audio
- Carver
- Cary
- Cary Audio
- Castle
- Castle Acoustics
- Cayin
- Celestion
- Centrance
- Cerwin
- Cerwin Vega
- Chang Lightspeed
- Channel Islands Audio
- Chario
- Chord
- Chord Electronics
- Chordette
- Cinepro
- Clarus
- Clarus Crimson
- Class D Audio
- Classé
- Clayton Audio
- Clearaudio
- Clearwave
- Clones Audio
- Cocktail Audio
- Coda
- Coincident Technology
- Conrad Johnson
- Conrad-Johnson
- Constellation
- Constellation Audio
- Control4
- Coph Nia
- Corpse Cable
- Counterpoint
- Creek
- Creek Audio
- Crestron
- Crimson
- Crimson Electronics
- Critical Mass Systems
- Croft
- Croft Acoustics