PWSK-1 wireless kit with DSWPROwi subwoofers. Wireless system is made up of small wireless dongle that connects to subwoofer's amplifier plate. No additional AC power connection is necessary, because dongle connects to amplifier's power supply. Compact wireless transmitter connects to an A/V receiver and sends bass signals to subwoofer. There's no latency, no compression, just big b ass for viewing and listening pleasure.