Avantree TC417 Bluetooth Transmitter Receiver for TV, Optical Digital Toslink, Volume Control for 3.5mm AUX, RCA, 20H Playtime, aptX Low Latency Wireless Audio Adapter for Headphones, Home Stereo

I purchased these to connect my television to my receiver/sound system wirelessly. The system performs beautifully now, but it was a bit of a challenge to get working properly, perhaps due to a defective optical cable (not the one supplied, but one I had).Now that it is set up, it performs flawlessly. The delay is NOT bad at all, and easily corrected in-set on the television.A few things to note:1) At first, setting one unit as transmitter on my television, and the other as a receiver (on my stereo receiver), I had some trouble getting them to pair, but I put the units close to each other and this problem was solved.2) I still had no audio signal at my stereo receiver. To try to trace the problem back, I first plugged the transmitter into the RCA jacks on my TV and plugged headphones into the receiver (this worked). Next, I plugged the receiver into my amplifier using the RCA plugs (this worked), then tried with the transmitter hooked to the tv optical out (this worked), and finally got it working via the optical cable to my receiver.NOTE: During this process, at one point I had the transmitter broadcasting DIRECTLY to my receiver's bluetooth input --- this was HORRIBLE, with a completely unacceptable delay, but this was the fault of the STEREO RECEIVER, NOT the fault of the Avantree adapter. Using an Avantree Adapter, there is virtually no delay, and it works perfectly.Moral to the story - if you experience a delay, it is likely to your bluetooth receiving unit delay, and not due to the Avantree products. You can, if you want, purchase a second Avantree unit as a headphone/stereo bluetooth receiving unit, and this will solve your delay problem.A+ for the product. This is exactly what I was looking for!

What a great little product. Battery powered. Receive and transmit. There's so much you could actually do with this device it is mind-bending. For the small price you cannot go wrong. It comes with all the cables that you could need including The optical cable. There's definitely no regret on this purchase I get that some people may not need the battery powered option but once you have it all it just changes everything that you have in your ability. I could go on about all the options that you could have using this device, I mean geez literally you could take an old boombox hook this up to it and have no power requirements because your boombox would be powered on batteries and this is powered on batteries and you'll be able to Bluetooth to it easily. Sure this may not be exactly what you're trying to do but what I'm saying is it opens the door for a lot of possibilities and it works well.

The sound quality is great with no noticeable delay at all when using aptX headphones. I'd say it is just as good as wired, and works great for watching TV without disturbing others, which is why I bought it. It is important that the headphones also support aptX or you will notice a significant sync delay, and of course the better the headphones the better the audio quality. I'm using this with a fiber "TOS-Link" connection (fiber provided) and it works very well.The only issue I have, which dropped a star, is the adapter shuts off if there is no BT receiver (headphones) connected, so you have to turn it on each time you want to use it. This would probably be a minor annoyance to most, but I found it to be problematic for my installation.It is a great product otherwise!

I will write a review of this device for a very specific use and because I hope it may help someone else since before buying it nobody was able to confirm if my setup would work or not with this device.I bought this transmitter to connect 2 pairs of Bluetooth speakers that can play in TWS (True Wireless Stereo) since my idea was to install 4 Bluetooth speakers embedded in my walls in my living room to play music or watch movies with a completely cable free setup and a nice stereo sound. With TWS you have 2 Bluetooth speakers that pair between each other and one play the left audio channel and the other one the right audio channel. I had 2 pairs of these one pair in the front and one pair in the back. Once the 2 speakers are paired in stereo mode you can pair one of them to your Bluetooth enabled device, like cellphone or android tv for example.So I bought 2 pairs of Oontz angle3 raindance Bluetooth speakers and this transmitter. With that device i would be able to play 4 speakers at the same time from my cellphone or from my tv or androind tv. Even Avantree support told me it "would likely not work" but I still bought it and well.....it works amazingly!! I can either connect my cellphone via 3.5 mm cable to play music on 4 speakers in stereo or connect optical output of my tv to watch movies on this completely wireless setup!! This is great! I must say for movie watching on my tv there is a small audio delay induced by Bluetooth but it is still decent. For music it is really perfect! So if someone is trying to build up a similar setup know that it will work at least i can confirm it works with rhe Oontz Angle3 raindance Bluetooth speakers but not sure with another brand. Hope that will be useful to someone with the same idea.