UGREENBluetooth AUX Adapter Built-in Battery, Support Dual Pairs Bluetooth 5.3 Receiver for Old Stereo, 3.5mm/ RCA Dual Channel for Home Stereo Speakers

I have put these on quite a few really old , cheap stereos and sm amplifiers. They have all worked just fine. Great way to stop the children and grandchildren from complaining as much.

Product grants what it offers. I connected it to my old model Sony 3+1 home theatre system. I needed a bluetooth adapter to connect that old school sound system to my brand new Nebula projector and i ordered that device. I connected it to the audio output of the bluray player, which also works as the amfi of the system, and it synchronised easily and successfully. No disharmony or discordance between the sound and image. It works really on time. Sound quality is satisfactory however there is a deep noise which is audible when nothing is being played. Once you turn on the sound you don't hear it. Which is quite acceptable for a 11 USD device.

Clean, clear, and better than expected quality. 1st and foremost this IS NOT an audiophile device you are not going to be able to her the third string flute player fart by accident while playing Beethoven's fifth at Carnegie Hall 7th row center.... It wasn't made to do that.....BUT!!!...... I you are wanting to hear some good tunes while you are in the wind at about 90,mph on your Harley..... well this thing is perfect for that !!!!!!!!

My main objection is that this won't reconnect once your transmitting device disconnects (e.g. you go out of range or simply turn off your bluetooth) and then later wants to reconnect -- I have to powercycle it in order to reconnect, which it then does immediately, but it's a pain and plenty of other products don't do this whatsoever.

This device works fine. My only complaint is that you have to depress and hold the on/off button for about 4 seconds. It should be one touch for on and off. When it is playing, the button does serve as pause/play, but I think that would rarely be used by anyone. Just make it one touch for on/off.

I have an outdoor speaker system attached to a stereo inside, I ran a red and white audio cable to the yard in order to be able to plug in an adapter for headphone jack use for people's iphones and ipods and such, but with protective cases, many of these cables didn't fit without taking the case off, or whoever was playing music had to leave their phone. This device plugs in to the cable, needs a power source either usb or outlet which the cable and adapter is included, and is very simple to pair. Just press the silver button on top until it flashes and stores up to 5 devices allowing you to play anywhere within a pretty decent range of the device, so perfect for hanging in the yard or by the pool and able to check messages and use phone and change music instead of walking over to the device. I highly reccommend if you are in need of a bluetooth device to attach to a white and red cable.

Stopped working correctly after several months. Any videos or audio bluetooth streaming media pauses after 3-5 seconds. I have tried various devices and rebooting, which has not fixed the issue. At least I purchased it on sale, but should have lasted at least one year.

Overall good build quality. Audio quality sounds like Bluetooth should, no noise or static. I tested this out in the garage and the distance can actually go quite a bit more than what is listed. I was able to go about 80 or 90 feet away outside of the garage raising my phone up to keep objects from blocking it. When close to ground level where there is a lot of object blocking it, it ranges between about 25 to 40 feet. This is the second product I bought from UGREEN and I am pleased with both of them, not afraid to buy another product from them. Package comes with charging cable and 3.5mm aux cable. There is no RCA cables or wall charger included.