ITEM NAME:3X(For Yamaha Amplifier Board Bluetooth 4.2 Dual Hd Verwerking Hifi ProfessC8B5) ☆★ Product Details ★☆ 3X(For Yamaha Amplifier Board Bluetooth 4.2 Dual Hd Verwerking Hifi ProfessC8B5) 3X(Product model: XH-A351 Input voltage: DC12V Output power: 20W*2 Bluetooth 4.2 Version Number of channels: two channels Output impedance :4~8ohm Size: 75*60*14MM Installation aperture: 3MM Installation hole distance: 85*5*78.5MM colour:green Material:Metal +pc Package Contents: 1 * Digital power amplifier board)