Computer Interfaces:

Presonus - Arturia - Roland

Headphones:

V-Moda - Yamaha - Audio Technica - Roland - Presonus 

Studio Monitors:

Yamaha - Presonus 

Pro Audio:

Yamaha - Turbosound - Line6 - Presonus - Soundcraft - Behringer 

Microphones:

Shure - Telefunken - CAD - Audio Technica - AKG - Mogen - Behringer