The SHF404B are the ideal speakers for all your multimedia needs and feature the ability to connect to your smart phone, laptop or tablet via Bluetooth. Whether you’re listening to music, producing tracks, watching videos or gaming, these speakers provide dynamic and reliable audio. With built-in amplification, there's no need for a separate amplifier, an easy-to-use control panel is built in on top of the active speaker. Simply plug the active speaker into the mains and connect the other speaker via the supplied cable. Active Stereo Bookshelf Speakers (pair) Control panel on top Class-D Amplifier Equipped with: 4” Woofer and 1” Tweeter Bluetooth receiver for audio streaming Aux in Integrated USB MP3 media player Bass Reflex Port You have a question about this product? Fill in this form, we'll answer your question as soon as possible.