1Mii 2.4GHz Wireless Audio Transmitter and Receiver, HiFi Audio, 20ms Low Latency, 320ft Long Range Wireless Subwoofer Kit for Speaker/Stereo/Soundbar,Optical/Coaxial/3.5mm(RCA) Ports.

Super easy to use. I'm using it to transmit from my stereo to a soundbar on my treadmill. The soundbar accepts optical so I'm using using PCM to get 2-channel audio. I was using an Audio Engine wireless audio system previously (analog), but this provides a more stable connection. I really like that it could stay digital all the way to the soundbar. I notice absolutely no lag, but I'm sure there's a minimal amount since this uses Bluetooth for wireless.

Used this to get my second home theater sub channel to my theater seats for chair mounted bass shakers. Works great, no perceivable delay, they are bass shakers so I don't know if audio quality is great, but great for what I'm doing!!!

Does a great job for my subwoofer which is about 15 feet from my reciever

Rather than route 30 feet of optical cable around the room from my home theater PC (HTPC) to my digital to analog converter (DAC), I opted to try this wireless optical/coaxial receiver/transmitter set. The set transmits stereo PCM signals, so the output device needs to be set for 2 channel PCM output; 5.1 surround sound is not supported, and neither is SACD (Super Audio CD). I used a DVD-audio/SACD player as well as JRiver Media Center from the HTPC as audio sources, and a Benchmark DAC2 HGC as the digital to analog converter. The Benchmark DAC2 displays the bit depth and sample rate it is receiving, and I compared the bit rate and sample rates from the sources to those the wireless receiver fed into the DAC.The set comes with a pair of optical cables, a pair of 1/8" stereo to RCA cables, and a pair of 1/8" stereo to 1/8" stereo cables. It does not come with digital coax cables, but these can be obtained inexpensively if needed. The set also includes two USB-C to USB-A cables and two USB-A power supplies. A user manual and troubleshooting manual are included.The manual states that the frequency used is 2.4GHz, and so should not be used close to a wireless router since it may interfere. The troubleshooting guide states that walls can interfere with the signal transmission of the audio signal.Upon turning the transmitter on, its LED flashed blue and red. Upon turning on the receiver, both turned blue after about four seconds, indicating that they had paired successfully.Using the optical and coax connectors, the sound quality through my DAC was excellent. I was unable to hear a difference between using this device and connecting directly to the home theater PC or DVD-audio player.There were two issues with these devices, however, that keep it from getting 5 stars:1) Via the analog audio output, there was audible background noise.2) The transmitter converted all digital signals to 24bit/44.1kHz, whether a CD quality (16bit/44.1kHz) or DVD-audio quality (24bit/96kHz) piece was being played. More attuned ears than mine might hear a difference. I could not.I'd recommend this as an alternative to anyone who needs to transmit a stereo audio signal across the room via optical or coax cabling, with the caution that, if all samples of this item are like mine, the bit depth and sample rate will be changed to 24bit/44.1kHz.

Sends audio from TV's optical output wirelessly to mating receiver box outputing audio via HDMI port. It may provide same wireless audio transmission using other ports.

Distortion and lost output than wired connection 30% low volume than wired connection setup is easy just in second also provide all necessary wires but the main concern is outputUpdateSo as talk with seller in December agree to refund but i didn't get when i ask again now seller told after sale i can't help you

As advertised; easy setup and good, solid connection. This is how all wireless pairings should work.

I relocated my television to another wall away from my stereo components and needed a way to still enjoy my built in surround sound ceiling speakers. These little units come with EVERYTHING you'll need. I used the optical cables from my TV and to my Yamaha receiver, but I'll likely change to coax due to the higher bandwidth. I plugged each unit in and they paired automatically in about 2 seconds. It transmitted perfect stereo sound with no latency, or sound degradation. These performed flawlessly! They are built well with an aluminum case and a single indicator light. The power button is aluminum and it has a solidly built and adjustable antenna. My transmission distance is only about 12-15 feet, but I didn't have to buy and pull cables through the ceiling and walls. It requires you to set your TV to PCM digital output, so I know I don't get actual surround sound, but I still enjoy a greater sound experience through my stereo. There are HDMI transmitters, but they cost much more. For a living room these are great. Spend more if you want a true theater experience.