Tannoy Ltd is a British manufacturer of loudspeakers and PA systems. The company was founded as Tulsemere Manufacturing Company in London in 1926.


Lab.gruppen is a Swedish company, specializing in power amplification and powered loudspeaker management systems.


TC Electronic is a Danish audio equipment manufacturer that makes guitar effects, audio interfaces, signal processing software and hardware the professional live and recording applications


TC-Helicon is a Canadian audio equipment manufacturer, focusing on products for the voice.


Dynaudio Acoustics focuses on professional studio monitor loudspeakers.


Linn Products is a Scottish company, based in Glasgow, that manufactures hi-fi, home theatre, and multi-room audio systems. It is the manufacturer of the renowned Linn Sondek LP12 turntable.