PMA6000B 4 Place Intercom Aircraft Certified PS Engineering has revolutionized audio control in general aviation airplanes. At that time, the original PMA6000 took the audio panel from a collection of switches added as an afterthought, to a multitalented intersystem focal point for cockpit audio. Radio selection, cockpit communications and even music were seamlessly combined in the modern audio control panel. The PMA6000-series set a benchmark for all GA audio panels that followed. The next generation PMA6000B has been given the benefit of PS Engineering's 20+ years of audio panel control design and 35+ years manufacturing experiences. It offers a low cost alternative to the more capable audio panel product line that the industry has become to expect from such a focused driven company. The PMA6000B combines an audio selector panel with a top-quality manually adjusted VOX intercom and a slew of features to enhance versatility and utility. Built-in 4 place mono intercom PS Engineering's "Set-it and Forget-it" manual VOX Optional built-in marker beacon receiver. Split mode for dual audio capability 2 - Com Capability 3 - Intercom isolation modes - Pilot Isolate, All, and Crew 2 - Music inputs with Soft Mute™ 2 - Unswitched inputs 6 - Switched inputs A patented "swap" function allows selection of Com 1 or Com 2 from remote pushbutton Fail-safe feature automatically hard-wires the pilot to Com1 in the case of an outage Uses a single 44-pin connector making installation easier.