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BT is a bit more complex for hifi use as you're also converting digital to analogue, which means you (usually) need to pay attention to the DAC. I've got one of these which has a Wolfson DAC and is basically a copy of the Audioengine B1. It has optical and coaxial digital out if you decide to use a dedicated DAC too.
I'm very happy with it, though it might be for sale as the new DAC I've got on order has BT built in so this one is redundant now
I’ve been happy with this one - no lag for movie audio and connects fine. The “connection made” sound isn’t super loud or offensive either, which is important.
1mii Bluetooth 5.0 Receiver, Bluetooth Audio Adapter with 3D Surround aptX Low Latency for Streaming Music from Smartphone/Tablet to RCA/3.5mm Aux AV Receiver and Home Stereo Speaker-B06 https://www.amazon.co.uk/dp/B07YTKQ78N/ref=cm_sw_r_cp_api_i_YcOUEbD68YRMZ