The A100 speakers are created with high-strength MDF materials, ribbon tweeters, aluminum ribbon diaphragm, a Class-D amplifier from the world's top suppliers, and an XMOS processor with nearly no loss in sound quality. All these features optimized high frequencies and reduce unwanted environmental voices. The Bluetooth connection and the Qualcomm core let you enjoy any media resources at any space in your house. The multiple color choices with black, red, and white appearance best fit any family or outdoor activities. Multiple outputs and input choices are for you to easily connect different smart devices, including your laptop, mobile phone, TV, and more. The active Hi-Res certified speakers will surely deliver a superior 3D sound to you.