The Fosi Audio Mini Stereo Amplifier features a highly efficient, fully integrated digital Class D audio amplifier IC based on new amplifier technology, supporting a power supply voltage range of 12V-24V. The V1.0B 2-channel Class D amplifier uses the Texas Instruments TPA3116D2 chip. The TPA3116D2 is a stereo, high-efficiency digital amplifier power stage for driving speakers, featuring an advanced oscillator/PLL circuit that employs multiple switching frequency options to avoid AM interference. Its high performance effectively improves output power and audio quality. With advanced circuit design, built-in speaker protection circuit, and a robust aluminum chassis, this home Hi-Fi integrated amplifier produces clear and crisp sound, free of noise and completely silent when nothing is playing. The V1.0B stereo audio amplifier has very low power loss under all operating conditions. Its ultra-high power efficiency and low-temperature operation make the V1.0B suitable for use in home audio systems. Packing details: V1.0B Amplifier x1, Power Adapter x1, AC Cord x1, User Manual x1, 24-month worry-free warranty, and friendly customer service.