The compact SMSL A50 PRO is a 2.1-channel D-class amplifier that has two Infineon MA12070P amplifier chips and can deliver up to 2x70W power at 4 Ohms. One of the biggest advantages of the A50 PRO is its wide range of digital connectivity - in addition to the USB-C input, it also has HDMI ARC and optical inputs, making it compatible with many digital devices such as televisions, computers and video game consoles. In addition, it has a 3.5 mm jack connector, a passive subwoofer output, and also has a Bluetooth 5.0 wireless connection. Its versatility is complemented by several selectable equalizer settings and digital filters, so this high-performance, compact small amplifier will surely please a wide range of users. The package also includes an RC-8A remote control and Bluetooth antenna.