Genius SP-J330 2.0 Speaker System - 20 kHz - 8 W RMS. The SP-J330 delivers high quality acoustics from dual high performance 2inch driver units delivering 8W RMS power output. The speaker bodies are finished in a high-gloss black surface coating and stylishly textured cloth front panel. This elegant and sleek modern design is an ideal match for both PC systems and notebooks. Other features include a line-in jack socket for connection to MP3 players and other audio sources, a headphone jack socket and volume, tone and 3D surround sound effect controls.