GOgroove SonaVERSE LBr USB Powered 2.1 Computer Speaker System. Surprising Performance. Unlike many popular USB powered speakers plagued by hollow audio and lackluster quality, the SonaVERSE LBr offers impressive clarity & fullness. Dual 3-watt satellite stereo drivers deliver rich mid-range & high frequencies, while the 5-watt subwoofer powers deep, resonating bass. Integrated volume & bass level equalizer knobs allow you to find the perfect audio mix! Wide-Range Versatility. With the option to power via USB port or included AC adapter, you can take the LBr virtually anywhere. Simply plug the USB power cable into your laptop or computer, insert the 3.5mm cable into your audio jack, and start rocking out to your favorite tunes! The design is perfect for portable setup in the office, classroom, bedroom, living room, or home entertainment center. SonaVERSE LBr is the perfect back to school gift for any college student - it's ideal for a dorm room, and will blow their friends' laptop speakers out of the water! Tech Specs: Output: 11-Watt Total RMS, 22-Watt Peak. Drivers: 2 x 3W Satellite, 5W Subwoofer. Freq. Response: 150Hz - 20KHz. Input Power: USB DC 5V; AC 110-240v. Dimensions: 2.75 x 2.8 x 2.8" ea. satellite; 5.25 x 6.0 x 6.75" subwoofer. Compatible With: Apple Laptops - Apple Macbook Pro with Retina Display 13-inch , 15-inch / Macbook Air with Retina Display 11-inch , 13-inch Desktop Computers - Apple iMac 21.5-inch , 27-inch / Power Mac G5 , G4 / Mac mini / Mac Pro...and more!