<b>【 Widely Usage 】</b><br> You can transmit audio from 3.5mm to RCA or from RCA to 3.5mm in different scenario. <br> * Computer <br> * Phone (Android & IOS) <br> * MP3 Player <br> * Headphones <br> * Car Stereo <br> * Speaker <br> * Amplifier <br> * TV <br>