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

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.

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.

Bluetooth can cut out, but it's rare. Hard to know if it's the rcvr or something with my phone. It does have a friendly voice saying "connected" right before playback.Otherwise, I can say it faithfully connects for hours on end. For best results, don't move the phone around too much during playback. Set it on a table or countertop.I have an older phone used just for music, which sits 2m away on a charger. If there's a problem, it's usually bc the playlist ended or a power spike caused a reboot.This one is best suited for HiFi audio systems using end-to-end RCA cables (wht/red). Mine is hooked up to the input for "CD". Tried "TAPE", but the signal had too little voltage. Any input marked "AUX" should also work well.The single button controls it all; long push to flash the light red/blue (pairing), which also shuts it off after a long press. Once connected, the button acts as play/pause, but no skip function.

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.

Doesn't work well with iPhone 10 but works great with my note 9. For iPhones I think it's very quiet but with mine it is plenty loud enough. Good battery life. Solves a very common problem in using Bluetooth for home theater and many other situations.

Purchased to connect my tablet to my home stereo receiver in my office/home gym. Now I can stream video to my tablet while on exercise equipment and the audio is beamed to the stereo for full surround sound. Auto connects, works great!

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.

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.