Amazon.com: Klipsch ProMedia 2.1 THX Certified Computer …

– 3.5mm jack does not fit properly in the port (tested with two different sets of Klipsch ProMedia 2.1) – No on/off switch, you either leave them on or have to unplug them between uses – Volume and bass knobs very sensitive, the smallest nudging can turn the level from 1 to 100 (have to adjust sound via windows mixer) …

https://www.amazon.com/Klipsch-ProMedia-Certified-Computer-Speaker/dp/B000062VUO