Enhance your car's audio experience with the Black Car Audio Amplifier. Designed for superior sound quality and performance. Rocketfish Wireless Rear Speaker Kit. This kit is used to provide wireless connectivity for the rear speakers in a home theater system, eliminating the need to run physical wires across a room. Function: The kit transmits high-quality, uncompressed audio signals from a home theater receiver or amplifier to the rear speakers over a radio frequency link. Components: The larger unit is typically the sender/transmitter, which connects to the main audio source. The smaller unit is the receiver, which connects to the rear speakers. Benefit: It allows users to enjoy a surround sound experience with a neater, more organized space, without the hassle of long speaker cables.