Finally got around to finishing off my review this weekend for the SoundSync A3341 which was picked up on the Power User page. I’ve used a few BT transmitters / receiver’s before but this is certainly the better of the bunch, in no small part due to it featuring Bluetooth 5.
Key Features
2 in 1 design gives it flexibility to be used for both BT & non BT devices
Bluetooth 5 provides stable, lag free connection
aptX HD support for high quality audio
Long battery life
Quick charge time
RCA, Aux and optical cables included, giving options for most setups straight out of the box.
Pro’s
Ability to bring Bluetooth to non Bluetooth devices
Quick & easy setup
Included cables for most audio setup options
Con’s (well not entirely)
Price is a tad higher than other variations on the market but this is the only one featuring Bluetooth 5 for multiple device support
Opinion
I’ve used several Bluetooth transmitters & receivers in the past, all of which have served well and not overly caused me much heartache with their setup and use. The SoundSync however certainly raises the bar thanks to the inclusion of Bluetooth 5, allowing for transmitting or receiving to and from more than one device at a time (within reason). Combined with the long battery life and 18 month warranty, I wouldn’t hesitate to recommend this to anyone who is after the ability to stream to multiple speakers or wants to bring new life to older audio equipment.
@AnkerOfficial It might be worth checking the Amazon UK listing, the name could do amending as I don’t think it qualifies as a punchbag wall bracket 
EDIT - I received a PM regarding the little box connected to the AUX input on my speaker during the non-BT section of the review (last photo for ref). This is another BT transmitter / receiver. As I did not have access to a RCA or non-BT speaker I had to utilize the AUX port of my BT speaker to show how the A3341 can be used for connecting non-BT devices in conjunction with another BT transmitter / receiver…hope that makes things a bit clearer 
When you say “low latency,” how low are you talking about? As I recall, it wasn’t advise to use bluetooth headphones for the Jamstik+ due to latency problems.
