With Bluetooth 5.0 / USB / 3.5mm AUX audio input, compatible with most common audio devices such as phone, tablet, computer, TV, CD player, decoder, preamplifier and so on. Bluetooth 5.0 wireless input provides faster and more stable transmission, USB input plug and play, no need for any driver. Equipped with complete accessories, you can enjoy its powerful function directly when you get it. Uses classic TPA3116 chip, the maximum output power is improved to 100W (50W * 2) which can drive most home speakers. HiFi clear and delicate sound, no audible noise even at high output power. Supermini size with exquisite appearance, aluminum housing in five colors (black/silver/gold/blue/red) for free choice, can provide HiFi music and decorate your home or office, very suitable for home and desktop audio system. Parameters: Colors: Black Bluetooth version: 5.0 Rated power: 50W * 2 Channel: 2.0 Impedance: 4-8 ohm Audio input: Bluetooth / USB / 3.5mm AUX Audio output: banana speaker jack Power supply: DC 9V-24V Dimensions: (L) 78 * (W) 70 * (H) 38 mm (3.07 2.76 1.50 inches) Weight: 154 g / 0.34 lb Package weight: 0.45 kg / 0.99 lb Package contents: 1 Amplifier 1 Audio cable Experience powerful, high-fidelity audio in a compact design! This versatile amplifier features Bluetooth 5.0, USB, and AUX inputs for seamless connectivity. Enjoy clear and delicate sound with up to 100W of power. Perfect for home or office audio systems.