-1002L MINI Bluetooth 5.0 DC 5-24V Wireless Audio Digital Power Amplifier Stereo Board 100Wx2 1. Bluetooth 5.0 version offers higher transmission efficiency and a stable connection with a transmission distance of up to 15 meters (without obstruction). 2. Designed with an efficient heat sink for optimal heat dissipation. 3. Equipped with a potentiometer for volume adjustment and a power switch for easy control, ideal for DIY speaker projects. If using a metal enclosure, ensure the Bluetooth antenna is properly extended. 4. Features a copper DC connector capable of handling high current with minimal heat generation. 5. Built with 4x 470uF high-quality capacitors to ensure stable power storage and consistent power delivery, supporting superior sound performance. 6. Includes a DC power cable for compatibility with the input power interface. Even without a dedicated DC adapter or battery, the unit can be connected and powered. Operating Voltage: 5-24V (Compatible with 9V, 12V, 15V, 18V, 24V adapters; higher voltage recommended for optimal performance) Power Output: - 12V: 24W + 24W @ 8 ohm, 40W + 40W @ 4 ohm - 15V: 32W + 32W @ 8 ohm, 60W + 60W @ 4 ohm - 19V: 64W + 64W @ 8 ohm, 80W + 80W @ 4 ohm - 24V: 72W + 72W @ 8 ohm, 100W + 100W @ 4 ohm Specifications: Product Name: HIFI Bluetooth Digital Power Amplifier Board with Filter, 2x100W Model: -1002L Chip Solution: Standard Built-in Filter: Yes Compatible Speakers: 50W-300W, 4 ohm to 8 ohm Channels: Stereo (Left and Right) Bluetooth Version: 5.0 Bluetooth Range: Up to 15 meters (unobstructed) Protection Features: Overheating protection, Short circuit protection Color: Black Material: Metal + PCB Package Includes: 1 x Bluetooth 5.0 Digital Amplifier Board 1 x Shell 1 x Screwdriver 1 x Power Cord Note: The power switch on the board is a standby switch. When turned off, the device enters low-power standby mode. To completely cut power, disconnect the DC plug, especially during prolonged non-use. Tip: For maximum output power, ensure sufficient audio input and adequate power supply (voltage and current). Higher supply voltage results in greater output power. Output varies with speaker impedancehigher impedance (ohms) typically results in lower power output. Contents include only the items listed above; other accessories not included. Note: Lighting and display settings may cause slight color variations between the product image and actual item. Measurement tolerance: +/- 1-3 cm.