The 12G-SDI to HDMI 2.0 converter with audio extension provides a cost-effective way to convert 12G/6G/3G/HD-SDI signals to HDMI 2.0 compatible format. The conversion between SDI and HDMI is purely digital and guarantees a lossless transformation for both audio and video. The device supports up to 8-channel audio and also provides a low-jitter SDI local loop and high-quality analog stereo output to provide flexibility to users.