The Sound Suppression Filter eliminates ground loop noise to deliver clear audio for car sound systems and home stereos through 3.5 mm auxiliary connections. No external power required: This passive ground loop noise isolator is easy to carry and install, offering plugandplay functionality for any device with a 3.5 mm audio port. Broad compatibility: Works with any device that has a 3.5 mm audio connection, including car stereos, home sound systems, computer speakers, and other audio equipment. Target users: Ideal for music enthusiasts, podcasters, and video editors who demand interference sound for listening and production. Performance and reliability: Reduces interference and ground loop hum to improve sound clarity across all platforms. Use scenarios: In the car: connect a phone or MP3 player to the factory stereo to remove ground loop hum and improve drivetime audio. At home: link a laptop or tablet to a home speaker system for cleaner, crisper playback. In a studio or editing setup: connect cameras, recorders, or other 3.5 mm devices to speakers or monitors to minimize interference during recording and postproduction.