Feature:1. Supports BT wireless connection.2. Large heat dissipation area, ensure high power and high performances operation.3. Protections against overvoltage, undervoltage, clipping, short circuit, overheating, etc.4. Comapct size for easy carrying.5. It can be controlled through the mobilephone app, the knob and the IR remote controller(included), making the operation more convenient and quick.6. Aluminum alloy oxidation process, rust proof, lightweight and practical.Specification:This power amplifier is compact, easy to carry, and simple to use, dual channel stereo sound, without compromising sound quality.Features:Supports BT wireless connection.Large heat dissipation area, ensure high power and high performances operation.Protections against overvoltage, undervoltage, clipping, short circuit, overheating, etc.Comapct size for easy carrying.It can be controlled through the mobilephone app, the knob and the IR remote controller(included), making the operation more convenient and quick.Aluminum alloy oxidation process, rust proof, lightweight and practical.Knob usage instructions:Rotation: Adjust the volumelevel.Click: Pause/Playing.Double click: NextSong.Three strikes: Switch playback mode (BT/AUX/USB drive).Long press: Turn on/off.Specifications:Color: black, red (optional)Material: aluminum alloyBT: 5.1Output impedance: 4-8Output power: 50W+50WSupport voltage: 9-24Volt/ above 5ARemote battery: 1 * CR2025, 3V, 150mAhItem size: 78 * 52 * 35mm / 3.1 * 2.0 * 1.4inItem weight: 100g / 3.5ouncePackage size: 150 * 90 * 70mm / 5.9 * 3.5 * 2.8inPackage weight: 240g / 8.5ouncePacking List:1 * Power Amplifier Main Board1 * 3.5mm AUX Cable1 * RCA to AUX Cable1 * Remote ControllerPackage List:1 * Power Amplifier Main Board1 * 3.5mm AUX Cable1 * RCA to AUX Cable1 * Remote Controller