esinkin Bluetooth Receiver Wireless, NFC-Enabled Audio Adapter 4.0 for HD Home Stereo Music Streaming Sound System for 3.5mm (AUX and RCA)

This thing works exceptionally well! It turned an old Onkyo receiver from the 90's into a much more modern, useful sound system that supports my bluetooth entertainment, including Spotify. This blue-tooth receiver will immediately pair with a familiar device, meaning that I can simply turn on my stereo receiver and immediately play tunes stored on Spotify.

EXCLELENTE OPCION PARA EQUIPOS QUE NO TIENEN RECEPCIÓN DE BLUETOOTH

It works great with a smartphone. It only works with one phone at a time. I could not get it to hook up with Alexa, though I tried all guides online. Alexa could not get the signal but Ipad did hook up.

1.) It's a Bluetooth receiver only, not a transmitter. It RECEIVES audio via Bluetooth radio from remote devices such as laptops, smartphones, desktop computers, or any devices that transmit audio over a Bluetooth carrier signal - only one device at a time. It WILL NOT SEND/TRANSMIT a signal over the air TO any other device. I'm not trying to belabor the point or be sarcastic, but some of the questions I've seen seem to indicate confusion as to whether it transmits and receives, or just receives.2.) It feeds the audio it receives to an amplifier as a LINE-LEVEL signal via a stereo signal cable (provided) - RCA to 3.5mm or vice-versa. You can use the cable either way depending on your amplifier's input jacks. Both the RCA and Aux. jacks on the Esinkin are line-level OUTPUTS; just use whichever one you need. If necessary, you can use your own cords or adapters to make the correct connections to your amp.3.) Will it drive speakers? ONLY IF they are Powered Speakers, meaning each speaker has its own built-in amplifier. It WILL NOT drive non-powered speakers directly without amplification. Headphones? Probably; I haven't tried it. It would depend on the headphones, and since there is no volume control on the receiver, you would have to be able to adjust the volume at the source: phone, laptop, etc. Proceed with caution so you don't wreck your headphones or your hearing with an initial super loud blast. You know how getting blasted makes it nearly impossible to find the volume control or rip the phones off your head without hurting yourself.4.) Power Supply - It comes with its own plug-in supply and cord, and that's the only way to power it. It WILL NOT run off a USB supply or port on a computer. The input is keyed to the cord supplied with the AC adapter. If that fails, you could probably find replacements.5.) Performance: I am pleased with the quality of the sound. I use it as an input to a 160 watt rms (80 X 2) Onkyo TX-8050 stereo receiver driving 2 pretty decent Pioneer speaker systems from the early 1990s, and it sounds about as good as strong FM reception or CD playback. I don't use the NFC function, so can't comment on that. Range is easily 25 feet, which is no problem for the layout of our living/dining areas. It seems to sync up quickly with my Bluetooth devices.I would recommend it, based on our experience so far.

I’ve really come to love this unit. I’m using it on my Yamaha surround sound receiver to play our Apple devices wirelessly. The sound quality is great. If there’s Blutooth lag I don’t notice it.If your stereo has an available digital optical input or a coaxial (rca phono plug) SPDIF input, get a Bluetooth receiver that will output to those. They are digital formats and will be better than analog RCA outs like on this. In my case the the outputs were not available. That said the audio is crisp and clean and I can hear no hissing extraneous noise where the noise floor would be.Some tips on setting this up. The device always pops up as discoverable. I live in an apartment and my neighbors haven’t taken control of it yet. But for most people it means this will be easy to connect. Turn your stereo volume to a decent level. If you have level that’s too low, and you try boosting volume from your wireless device it might lift the noise floor and you might hear unwanted sounds. Once the stereo is up, you can then control volume from your wireless device. In my case Apple IOS.Coverage has been good, but I live in A small two bedroom apartment.This is a good buy. Like I mentioned if you have an available optical or SPDIF input, get a unit with those outputs. My optical is being used by the tv to pass digital surround sound signals.The link feature on this unit only works with Android, so having Apple devices it doesn’t work for me.

Works great!

This works extremely well with my Yamaha stereo set up. Quick set up and you are streaming from your Bluetooth device to the stereo. Highly recommended.

I recently got a Bose Wave Music System IV (Radio/CD) but they aren't bluetooth enabled. Hooked this up to it and I can now stream from my phone or iPad - music, podcasts, etc. It was easy to hook up and works perfectly. My only issue is if I keep it plugged into the outlet it causes static when I'm listening to the Bose radio. I just unplug it if I'm using the radio. It even does it if the radio and esinkin are plugged into different wall outlets!? I'm over being annoyed by that since it's easy to unplug it. Bonus! It also works with an older radio with great sound - a Sangean which is in a different room from the Bose so I may get another esinkin...