-1002L MINI Bluetooth 5.0 DC 5-24V Wireless Digital Power Amplifier Stereo Board 100Wx2 Bluetooth version 5.0 offers higher transmission efficiency and a transmission distance of up to 15 meters without obstruction. Features an aluminum heat sink for efficient heat dissipation. Equipped with a potentiometer for volume adjustment and an on/off switch for easy control, ideal for DIY speaker projects. If using a metal enclosure, ensure the Bluetooth antenna is extended outside. Uses a copper DC connector designed to handle high current with minimal heat buildup. Incorporates 4 x 470uF capacitors to ensure stable power storage and continuous power supply, supporting high-quality performance. DC power input with cable allows compatibility with standard power adapters. Even without a dedicated DC adapter or battery, the unit can be powered via compatible sources. Operating Voltage: 5-24V (compatible with 9V, 12V, 15V, 18V, 24V adapters; higher voltage recommended for optimal performance) Output Power: - 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 Product Name: HIFI 2X100W Bluetooth Digital Power Amplifier Board Model: -1002L Chip Solution: Domestic Built-in Filter: Yes Compatible Speakers: 50W-300W, 4 ohm - 8 ohm Channels: Stereo (Left and Right) Bluetooth Version: 5.0 Transmission Distance: 15 meters (no obstruction) 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 unit enters low-power standby mode. To completely cut power, disconnect the DC plug, especially during long-term storage. Tip: For optimal output power, ensure sufficient input and adequate power supply voltage and current. Higher supply voltage results in greater output power. Output power varies with speaker impedance. With sufficient voltage and current, higher impedance speakers will produce relatively lower power output. Attention: Package includes only the items listed above. Other accessories or devices shown are not included. Note: Lighting and display differences may cause slight color variations between the product image and actual item. Measurement tolerance: +/- 1-3 cm.