Palo Alto Audio Design Cubik HD USB Computer Speaker System, Black (SA510APA) 24 bit lossless USB streaming. DSP for flat frequency response without subwoofer. For Smartphone, Tablet, Computer, MP3 player. Compatible with all major operating system Apple, Samsung, Android etc. Cable connection also allows charging of Smartphone or tablet. 24 bit lossless digital USB 2.0 connection and full digital amplification Digital Signal Processing (DSP) for flat frequency response without subwoofer 2.5 inch Metal Cone Peerless Full-Range Neodymium Magnet Driver Advanced enclosure design for enhanced bass Clear of analog noise degradation