SONICGEAR QUATRO 2-B-TURQUILLA is a 2.0 USB powered speaker system with a focus on bass. It features 2 built-in 2" SonicGear drivers and 4 built-in bass reflex panels for enhanced bass output. The speakers are powered via a 5V USB port and deliver a total RMS of 6 Watts with a frequency response of 50Hz-20KHz.