Check the listing for details. Memphis Audio SBT2 Rocket Switch Size BT Controller with Auxilary Input and USB. Condition: New. Listed at 84.65 USD. Memphis SBT2 Rocker Switch Bluetooth controllers give you maximum control of your audio system from a Bluetooth controller designed to fit in standard Rocker/Carling switch locations making it perfect for use in most major brands of Side-by-sides. Streaming and controlling your music has never been simpler. This unit features a high quality rotary dial which offers superior performance on the water or on the trails where conditions can be rough and bumpy. Enjoy multiple sources including Bluetooth, AUX & USB streaming/charging. An ultra-cool backlit LED knob illuminates in different colors to indicate which source is currently selected which eliminating frustration when selecting between sources. The unit features 5V outputs features a marine grade control box for extended Bluetooth perfor.