1. ### Product Features 1. It is equipped with Bluetooth 5.0, USB, and 3.5mm AUX audio input interfaces, which are compatible with most common audio devices, such as mobile phones, tablets, computers, TVs, CD players, decoders, pre - amplifiers, etc. 2. The Bluetooth 5.0 wireless input enables faster and more stable transmission. The USB input supports plug - and - play without any drivers. Complete accessories are provided, allowing you to immediately enjoy its powerful functions after receiving the product. 3. It uses the classic TPA3116 chip, and the maximum output power is increased to 100W (50W×2), which can drive most household speakers. The high - fidelity sound quality is clear and delicate, and there is no obvious noise even at high - power output. 4. It has an ultra - mini size and an exquisite appearance. There are five colors (black, silver, gold, blue, red) of aluminum alloy shells for you to choose from freely. It can not only provide high - fidelity music but also decorate your home or office. It is very suitable for home and desktop audio systems. 2. ### Product Parameters 1. Color: Black 2. Bluetooth version: 5.0 3. Rated power: 50W×2 4. Channels: 2.0 5. Impedance: 4 - 8 ohms 6. Audio input: Bluetooth, USB, 3.5mm AUX 7. Audio output: Banana plug speaker interface 8. Power supply: DC 9V - 24V 9. Dimensions: Length 78mm×Width 70mm×Height 38mm (3.07 inches×2.76 inches×1.50 inches) 10. Net weight: 154 grams/0.34 pounds 11. Package weight: 0.45 kilograms/0.99 pounds 3. ### Package Contents 1. 1 amplifier 2. 1 audio cable