Marvo SG-201 USB 2.0 Powered Multimedia Computer Speakers With Surround Subwoofer Heavy Bass for PC/Laptops/Computer (Blue) USB 2.0 powered computer speaker, wired speaker with 3.5mm plug Total RMS Power: 7W (3.5 per speaker)with subwoofer Volume control with On/Standby;computer speakers Frequency response: 120Hz - 20KHz | Signal-to-noise ratio: &gt; 80dB Ships in Certified Frustration-Free Packaging