Check the listing for details. OSD Nero WRSKII Wireless Rear Speaker Kit. Condition: New. Listed at 199.00 USD. Product highlightstransmitter and receiver for connecting passive surround speakers and powered subwoofer built-in amplifier for surround speakers 25 watts x 2 into 8 ohms 50 watts x 2 into 4 ohms compact design 5.8 GHz digital transmission for clear, low-latency signal 34-channel selection lets you keep your signal steady range of up to 100 feet (requires line of sight) frequency response: 20-20,000 Hz (speakers), 20-200 Hz (sub) back-panel volume dial and channel selector button stereo speaker-level inputs subwoofer input stereo RCA line-level inputs stereo speaker-level outputs subwoofer output 6-15/16"W x 1-5/8"H x 3-15/16"D weight: 3.3 lbs. warranty: 2 years What's in the boxWireless transmitter Wireless receiver/amplifier 9V Power adapter (attached 5' DC cord) 15V Power adapter (attached 4' DC cord) 6' AC power cord User's Guide About this itemWritten by Crutchfield's Colin M.A wireless kit for a cleaner, easier surround sound OSD takes some of the fuss out of setting up a 5.1 home theater system with their Nero WRSKII wireless adapter kit. This kit lets you connect a pair of passive surround speakers and a powered sub without running wire all the way to the back of your room from your home theater receiver. A strong, stable wireless signal keeps the audio signal clean and lag-free, while saving you time and effort. How it works This system includes a transmitter and receiver which communicate wirelessly. The transmitter hooks up to your A/V receiver's surround-channel and subwoofer preamp outputs to get its input signals. Or you can use speaker-level connections to feed the surround channels if your receiver doesn't have a multi-channel preamp output. You'll place the receiver in the back of your room, where it connects to your surround speakers with speaker wire (sold separately). A built-in amplifier powers the speakers. You'll balance the volume of your rear speakers using the dial on the receiver's back panel. A subwoofer preamp output lets you connect a powered sub for placement near the back of the room (sub cables not included).