Vx Aviation of Vancouver, British Columbia, has announced three products for non-certified aircraft that add capability, reduce cost and potentially simplify audio system installation. They are the AMX-2A 10-channel audio mixer, the ASX-2A stereo headphone music amplifier and the AL-1A tone annunciator. The AMX-2A ($145) manages all voice communications, tone annunciators, alarms and miscellaneous audio. [...]