Airborne Audio Dual Channel Multi-User Controllers HomeRadio and Audio SystemsAirborne AudioDual Channel Multi-User Controllers Dual Channel Multi-User Controllers Airborne Audio Product Contacts USA Cobham Aerospace Connectivity, US Sale Office, Prescott, USA US Sale Office, 6400 Wilkinson Drive, Prescott, Arizona, USA 86301-6164. Tel + 1 928 708 1550 Fax + 1 928 541 7627 Chelton Avionics, Inc. dba Cobham Aerospace Connectivity View location Contact office Regional Sales Offices Cobham Aerospace Connectivity, Marlow, UK The Cobham Centre, Fourth Avenue, Marlow, Buckinghamshire, UK SL7 1TF. Tel +44 (0) 1628 472072 Fax +44 (0) 1628 482255 View location Contact office Products300A Dual Channel Audio ControllerCobham’s Model 300A Audio Controller is designed specifically to meet the demanding requirements of IFR, Police, Forestry, Charter, Co...AA92H and AA94 Dual Channel Multi-User ControllersCobham's AA92H and AA94 are custom-configurable dual-channel audio controllers based on the AMS42 design.AMS42/AMS42F/AMS44 Dual-Channel ControllersCobham's AMS42/42F/44 series is a dual-channel audio controller that provides central control of all aircraft audio.