Features: Experience powerful sound with the GD100 100W Bluetooth-compatible Amplifier Board, featuring HiFi auditory and optical auditory output for immersive bass that transforms your experience. With a low heat digital chip, this amplifier ensures stable performances and long use while delivering deep bass and highly sound. For music enthusiasts, home theater users, and DIY auditory equipment aficionados for superiorsly sound amplification. Perfectly for home gatherings, music enjoyment, outdoor activity, and small performances, bringing powerful sound to any setting. Crafted from durability plastic and metal, this amplifier board for use in various countries like Germany, France, and more. Specifications: Model: GD100 Power： 100W Support: Bluetooth-compatible Support：DC12-24V AV220V Size：about 195x85mm/7.68x3.35in Component: Plasic and Metal Mounting Hole Spaceing:about81mm/3.19in Speaker Opening Size:about 5.3x17.6cm/2.09x6.93in Standard：European Package Includes: 1Set GD100 100W Amplifier Board note: Due to problem of lighting effect there might be tolerances in product, please understand. Please allow 0-2mm error due to manual measurement.