Ground Loop Isolator for Car Audio/Home Stereo System The ground loop noise isolator can well work with your home stereo system car audio even the Bluetooth receiver PCs etc. They can effectively eliminate the group loop interference that may occur when the audio source is connected to the playback device and bring clean music to you ELIMINATING BUZZING NOISE The ground loop noise isolator filter is easy to use no battery need or button. Just plug this ground loop isolator directly into the car/speakers AUX port and plug another side to the audio source. The ground loop isolator 3.5mm will instantly remove the buzz/hum/static out of your car audio system/radio/home stereo/speakers COMPATIBLE MODELS Except for the car audio/home stereo system the ground loop isolator is also suitable for most device that has a 3.5mm jack eg smartphones tablets mp3 player speakers headphone etc. The ground loop noise isolator work with some devices and may reduce the volume please kindly understand this MiniSize Portable The ground loop isolator 3.5mm is minisize and lhtweht2.36 0.78 0.78 IN 0.081lb this little gadget does not take much space and can be easily taken away. The package includes 2pcs ground loop noise isolators with 3.5mm audio cables and 1 manual which can help you easily use themNote Although the ground loop isolator will work well in most situations if you find the noise isolator can not well meet your need or have some problems while using this noise filter please feel free to tell us and we will help you fix the problem ASAP