Monoprice Blackbird 4K Series HDMI Audio Inserter - Monoprice.com
Amazon.com: HDMI Audio Embedder Inserter Digital Analog Audio + DVI to HDMI Support TOSLINK Optical 3.5mm Jack AUX Audio Input 4K60Hz 18Gbps HDR CEC HDCP2.2 : Electronics
Amazon.com: HDMI Audio Embedder Inserter Digital Analog Audio + DVI to HDMI Support TOSLINK Optical 3.5mm Jack AUX Audio Input 4K60Hz 18Gbps HDR CEC HDCP2.2 : Electronics
Theatrixx Technologies xVision Video Converter XVV-AUDIO2SDI B&H
Amazon.com: J-Tech Digital 18Gbps Digital/Analog Audio HDMI Embedder Inserter Support 4K@60Hz 4:4:4 HDR CEC HDCP2.2/1.4 with TOSLINK Optical 3.5mm Audio Input Options [JTECH-18GAE] : Electronics
Amazon.com: HDMI Audio Embedder Inserter Digital Analog Audio + DVI to HDMI Support TOSLINK Optical 3.5mm Jack AUX Audio Input 4K60Hz 18Gbps HDR CEC HDCP2.2 : Electronics