Review on JTECH-18GAE 4K@60Hz HDMI Embedder with Optical and 3.5mm Audio Inputs, Supporting HDR, CEC, and HDCP2.2/1.4 at 18Gbps by Johnny Grant

I use this in combination with a digital mixer, a Hosa AES to S/PDIF converter and an ATEM Mini Pro to match audio to video for live broadcast purposes. I have audio coming from Soundcraft via AES/EBU XLR cables to a HOSA AES to S/PDIF optical converter. It then outputs to this unit via the optical input and I also output the video from the camera to the HDMI input. The HDMI output then connects to my ATEM and I enable audio on that channel/input. ATEM can't handle the black signal (it won't record audio if there's no video - BlackMagic said I can get a signal generator, but it's surprisingly expensive), so I need to hook up a camera. Since I'm not using audio straight from a camera for our multi-camera live stream, there's no loss.