This high-quality RCA noise suppressor philtre is designed to provide superior sound performance for your car audio system. It features a ground loop isolator and hum killer capabilities, ensuring that you can enjoy your music without any unwanted noise interference. With a maximum output of 20 amps, this philtre is ideal for use in up to 12 vehicles. The Bumper brand philtre is manufactured in the United Kingdom and is compatible with a range of car models. It comes with the manufacturer part number IX-NF-100 and is perfect for use in cars with in-car technology, GPS and security systems. This philtre is a great addition to your car audio system, providing you with a more enjoyable and immersive listening experience.