The output power requirement isWRMS (10WRMS per channel) Document Creator. This system is based on a stereo Class D audio amplifier which is driving a pair of 4Ω speakers. This includes everything from resistors, capacitors, and integrated circuits to transistors and LEDs FigureBlock diagram of wireless Bluetooth stereo audio system. The power supply provides electrical energy to the speaker system Bluetooth Wireless Speaker Circuit Diagram details for FCC ID VIXSP made by Voxx Accessories CorpD