Permalloy core processors are our true selling point. Why, you ask? Because it effectively eliminates distortion, and any buzzing sound that occurs from ground loops. Ground loops occur when your audio source and speaker utilize the same power source. This is often found in car speakers and home stereo systems using a Bluetooth receiver.Our Permalloy design is superior to previous silicon-steel designs as it provides the best possible transmission quality, and reduces the gadgets size. | Our product is compatible with any portable device that is equipped with a 3.5mm audio jack. It can also be used with normal car kit, complete with a Bluetooth Receiver/Bluetooth hands-free that is perfect for use in both your car audio system and home stereo. | This gadget is perfect for people on the go as it is lightweight and completely portable. You can use it for your home stereo, then remove it and insert it into your cars audio system, for music on the go.This product takes up little space measuring in at just 8.5 centimeters with a weight of 22 grams. | Investing in a good audio isolator such as this will not only cancel ground loop noise, but will also play your music without any unwanted distortion. | The low frequency of this isolator can reach 40hz, allowing for 95% of consumers to receive distortion free audio.