Polk Audio SWA500 Power amplifier

This cool-running digital amplifier pumps out 250 watts of solid power to drive Polk's ingenious CSW100 or CSW200 in-floor subwoofers, or the or CSW155 in-wall sub. The SWA500 comes with custom sound-shaping circuit cards for each of the CSW subs. Plug the correct card into the amplifier to precisely tailor its output to your specific model. The resulting bass is deep, hard-hitting, and distortion-free.