3.5mm/MP3 to RCA Audio cable is constructed with premium quality Connectors; Gold plated 3.5mm and RCA Audio Plugs Copper Shell - Oxygen Free Copper and gold plated plugs ensure optimal signal stereo audio transmission and corrosion resistance. Beveled step-down design accommodates most mobile devices in a case with a snug and secure connection The combination of gold-plated connector tips, bare copper conductors, and braided shielding provides superior cable performance and lossless audio transmission SLIM 3.5MM CONNECTOR: With very slim connector, 3.5mm tablet/MP3/iPhone to 2RCA receiver/speaker could accommodates most mobile devices in a case with a snug and secure connection. No need to take off your bulky protective cases for smartphone, tablets. HOW IT WORKS:3.5mm to 2RCA Stereo Audio Splitter Cable connects your 3.5mm audio devices like Smartphone (iPhone), MP3 player (iPod) or tablet (iPad) to a stereo receiver, speaker or other RCA-enabled device for audio transmission. COMPATIBLE with devices with 3.5mm ports such as the iPod, iPhone, iPad, Samsung Galaxy smartphones and tablets, Google Nexus smartphones and tablets, Microsoft Surface tablets, Nokia Lumia smartphones, SanDisk Sansa MP3 players for connecting to popular electronics with RCA ports such as a Bose radio, Lepai LP-2020A+ Tripath TA2020 Class-T Hi-Fi Audio Amplifier, HomeSpot NFC-Enabled Bluetooth Audio Receiver and more now better than ever