WAMS (Advanced Music Systems)
WApogee Electronics
WAutomated Processes, Inc.
WBeyerdynamic
WDbx (company)
WEventide, Inc
WFairchild Recording Equipment Corporation
WGeorg Neumann
WHeil Sound
WJBL
WK-array
WL-ACOUSTICS
WLawo
WManley Laboratories
WMIPRO
WMusic Center Incorporated
WNagra
WNeutrik
WNTi Audio
WPhonic Corporation
WRane Corporation
WRCF audio
WRenkus-Heinz
WSolid State Logic
WSound Devices
WStuder
WTannoy
WTurtle Beach Corporation
WUniversal Audio (company)
WWard-Beck Systems
WYorkville Sound