Fuhjythy New M29 Audio Ground Isolator 5.4 Bluetooth Receiver Common Ground Noise Filter Stereo Current Noise Eliminator

3. Compatible models: Suitable for any portable device with a 3.5mm audio jack when grounding issues persist, used for car audio systems and home stereos. 2. Clear music enjoyment: buzzing caused by grounding circuits when using the same power source as some car speakers/home audio systems, achieving clear music enjoyment. 1. The operation is very simple: easy to use, just plug and play, no battery required. Compact and portable, this noise isolator does not take up too much space and is easy to remove. 4. Ground Circuit Noise Isolator: This product is an audio common ground isolator that is effective in reducing noise caused by the common ground between the audio source and receiving equipment.