1.2 General Information The AA12S is a compact Dzus-mounted audio controller with an integral 4-place stereo voice-activated intercom. It provides intercom capabilities for the pilot, co-pilot and two passengers (PAX). The AA12S accepts stereo music inputs from either portable or fixed entertainment systems to produce high quality stereo headset output. Radio functions include selectable transmit capability for pilot and co-pilot on 3 COM radios and a PA. Receive audio selections include COM1, C