After purchasing the Logitech Z313 speaker system I asked myself, why would I want to buy a stereo system now? At a minimal cost the Logitech Z313's provide the deep bass and upper ranges of what I would have paid hundreds for in a stereo system, directly from my desktop computer. I've had mine for a few years and never had a single technical issue. Controlling the volume of the speakers is accomplished using the small oval power switch that has a side-dial for volume. I keep it on top of the base or subwoofer, that the two speakers plug into. Between it and the volume controls found on internet and other media, the best settings can usually be found with minimal adjustments. I now consider the speakers an essential addition to any computer that I would rely on for sound, in addition to using other compatible devices to watch movies, videos or play my own selections of music. The speaker quality of my computer is going to sound tinny and canned without them, so if I were ever to have to decide again, it would be a foregone conclusion. I was hardly disappointed in having made the purchase.