Bluetooth Digital Power Amplifier Board body { font-family: Arial, sans-serif; line-height: 1.6; color: #333; } .product-description { max-width: 600px; margin: 0 auto; padding: 20px; border: 1px solid #e1e1e1; border-radius: 8px; background: #f9f9f9; } h2, h3 { color: #1a73e8; } ul { padding: 0; list-style: none; } li { margin-bottom: 10px; } Bluetooth Digital Power Amplifier Board Specifications: Product Name: Bluetooth Digital Power Amplifier Board Bluetooth Version: 5.0 Wireless Distance: 20 meters in an open space Signal Input: Bluetooth only Power Amplifier Chip: PAM8403 Power Input: TYPE-C (DC 5V) Matching Speaker: >=4Ω Short Circuit Protection: None Appearance Size: 40 x 30 mm Mounting Hole Distance: 34 x 24 mm Features: TYPE-C Power Supply Port: Equipped with a modern TYPE-C power supply port, this amplifier board supports dual 5W Bluetooth amplification for reliable and efficient power delivery from various sources, including power banks and fast chargers. Versatile Power Compatibility: Designed for ease of use, the amplifier board operates on a straightforward DC 5V power supply. It fully supports power banks as well as normal and fast charging options, providing flexibility and convenience for various power supply scenarios. Wide Speaker Compatibility: The amplifier board supports 4-8Ω impedance and is compatible with 4-inch and larger speakers. This flexibility allows for easy matching with various speakers, enhancing sound quality for different audio setups. High-Performance Audio Amplification: Utilizing the PAM8403 stereo class D audio power amplifier chip, the board delivers high power amplification with low harmonic distortion and high efficiency, enabling the reproduction of high-quality sound with minimal interference. High-Quality Components: Constructed with high-quality components, the amplifier board ensures low harmonic distortion and high efficiency. These features contribute to excellent sound reproduction, making it a reliable choice for audio enthusiasts seeking superior sound quality. Package Included: 1 x Power Amplifier Board