Each receiver can deliver 80 watts of power with the efficiency of a regular class-D amplifier and ultra-low audio distortion. The transmitter can send audio signals up to 300 feet in line-of-sight and 100 feet through walls and ceilings.
Its small size, but, carries a lot of juice, including the adaptive frequency hopping that avoids interference from other wireless devices in your house and full stereo audio transmission without compression for deeper bass and heart-pounding surround sound!
Avantree Lock, unlike the first kits on this list, is only a transmitter and receiver. It doesn’t power your speakers, but with a good setup, this kit is one of the most inexpensive ways to go wireless.
It’s one of the smallest, yet most efficient conversion kits that you’ll find, measuring 1.97 x 0.51 x 1.46 inches and weighs approximately 20 grams! Connectivity could be an issue because it only connects via a 3.5mm audio connector.