<b>Besign Ground Loop Noise Isolator for Car Audio / Home Stereo System with 3.5mm Audio Cable</b> <br> <br> <b>Eliminating Humming Noise</b> <br>If you've got your radio, iPod, MP3 player, Bluetooth receiver or similar audio equipment plugged into your car stereo with an audio cable and you're getting audio hum noise caused by ground loops, you need this isolator work together so that you can enjoy high quality music. Forget about the annoying noise! <br> <br><b>Pure Audio</b> <br>Help you can enjoy the clean and clear music/audio by eliminating the current noise in some car speakers / home stereo systems when grounding issues persist, also used with the Bluetooth receiver,or Bluetooth Hands-free Car Kit <br> <br><b>Package Contents: </b> <br>1 x Besign Ground Loop noise Isolator with 3.5mm Audio Cable <br>1 x User Manual.