Welcome to our store! 1. We have improved the power and enhanced its functions while retaining its mini size and elegant design. 2. AUX/USB/BT input is supported. You can appreciate music in various ways. 3. The BT function has also been upgraded. Now it is more stable and faster. 4. Music can be played losslessly (just like connecting to a computer) via USB input. 5. No need to install the driver. You will be amazed by the sound quality. Features: We have improved the power and enhanced its functions while retaining its mini size and elegant design. The power of the upgraded TPA3116 chip can be increased to 100W (50W * 2). You will be amazed by its power. AUX/USB/BT input is supported. You can appreciate music in various ways. The BT function has also been upgraded. Now it is more stable and faster. Music can be played losslessly (just like connecting to a computer) via USB input. You don't need to install the driver. You will be amazed by the sound quality. Specification: BT connection distance: 10m or less BT version: 4.0 + EDR Power: 50W * 2 Channel: 2.0 Impedance: 4 - 8 Ohm AUX input: 3.5mm stereo Power Supply: DC9V-24V Package List: 1 * NS-01G Amplifier 1 * AUX Input Cable 1 * RCA Audio Cable 1 * English Manual 1 * Power Adapter Guaranteed Satisfaction: Customers are our top priority. If you find any issues with the product, please contact the seller immediately. We strive to provide satisfactory after-sales service.