GOgroove SonaVERSE O2 USB Powered Computer Speakers with Dual Passive Woofers The SonaVERSE O2 speakers feature dual passive bass woofers and reach a 14-watt peak. With 3.5 mm audio input, you can connect your laptop or desktop and play your music and videos with crystal clear audio. The USB power cable allows you to connect directly to computers for a simpler wired setup that does not require a separate power adapter.