Insert Analog or Digital Audio to HDMI Output Use 3.5mm Line In or SPDIF Optical audio inputs to embed audio to the HDMI output. 3.5mm supports stereo audio while SPDIF Optical supports up to standard Dolby Digital. Supports up to 4K@60Hz Resolution Embed external audio to your incoming HDMI video signal without affecting the video quality. High Dynamic Range (HDR) Support Take advantage of the HDR support function and watch your HDR supported content in its full glory! Supports HDCP 2.2 & CEC Bypass HDCP 2.2 compliance ensures compatibility with latest 4K content. Free Lifetime Technical Support All J-Tech Digital products include a one-year manufacturer replacement warranty and free lifetime technical support from our customer support team located in Stafford, TX.