Audio Power Switch makes possible to connect two pairs of loudspeakers to one stereo amplifier or in opposite way : two amplifiers to one pair of stereo speakers. If you have high end stereo amplifier and home theatre multi-channel amplituner and one set of front speakers this small device is for you. There are many such products on the market but we did it just right and with quality focus. Quality speaker terminals, Van den Hul internal cabling and the most important: APS features the best quality internal switches of we could find, offering ultra-low resistance (<10mΩ) but also extreme durability and protection against dust or water (IP68 of IEC60529 standards). Even in high humidity environment the switch will work for decades with no impact to sound quality. Plus the switch is heavy enough to let you connect your super thick high end cables.