Compact and Powerful Mini Amp System Bluetooth Receiver for Wireless Audio Streaming Ability RCA (L/R) Audio Input USB/SD/FM playing Connect & Stream Audio from External Devices Push-Type Speaker L/R Terminals Front Panel Rotary Controls Power ON / OFF Switch LED Indicator Light Configurable Treble, Bass and Volume Adjustment LED Display With Bluetooth Antenna to Improve Bluetooth Distance With FM Antenna to Improve FM Sensitivity MIC Input