Since its founding in 1985, PS Engineering has grown to become the undisputed leader in the field of aircraft intercom and audio panel manufacturing. Our one and only mission is audio control. With this type of product focus, it's no wonder why PS Engineering holds more patents in the audio control field for General Aviation than any other company. PS Engineering has been the source for virtually every major innovation in the field of aircraft audio avionics. Exclusive use of USAF MultiTalker(R) Patent no. 7391877 First to provide true hands free VOX system, the IntelliVox® Patent no. 6493450 First to provide individually adjustable VOX circuitry First to use digital signal processing to record aircraft radio transmissions for playback in the cockpit.. First to provide an integrated aural warning system into an audio panel. First ever to receive approval under FAA C50c. First to provide Swap capability, Patent no. 5903227, 6160496 First to fully integrate music with Soft Mute™ technology, where music volume is muted, then slowly returns after the radio transmission ends. Patent no. 4941187 First to introduce an FAA approved stereo audio panel with intercom and marker beacons, all in the same unit. First to introduce AMP™, (Active Microphone Processor) a system that removes noise from the microphone. PS Engineering manufactures all of its products to the most exacting standards. Our quality assurance manual is approved by the FAA. MADE IN THE USA What sets PS Engineering apart from our competition is that we listen.