The Intergalactic Audio Ear is a piece of technology used in The New Adventures of He-Man.
The Intergalactic Audio Ear was an invention of Crita that enabled the Evil Mutants to overhear conversations from their sworn enemies on the planet Primus while they themselves remained on the Mutant Mothership. It consisted of a series of large horn shaped shells. Several of these were mounted on the outside of the Mothership, and they were connected to a receiver located on the bridge.
When the Scientists of Primus discovered that the mutants had been eavesdropping on them for some time, He-Man simply called upon his loyal pet Clawber to use it's sonic screech. This sound proved to be so unbearable for the mutants, that Skeletor soon used his Skull Staff to destroy the Intergalactic Audio Ear.