Sound Devices SD 442    
Available manufacturer's documents for this product:
 - Sound Devices 442 Mixer Overview (html) English
 - Sound Devices 442 Mixer Panels Description (html) English
 - Sound Devices 442 Mixer Datasheet (pdf) English
 - Sound Devices 442 Mixer User Manual (pdf) English
 - Sound Devices 442 Mixer Setup Guide (pdf) English