The ALF-WUK3A is a Full 4Kx2K at 60Hz 4:4:4 HDMI Auto Switcher with 3x HDMI inputs and 1x HDMI Output. It is controllable by selecting any of the inputs on the front panel or via IR Remote. It is compliant with HDMI2.0 and HDCP 2.2. The HDMI Switcher can transmit an uncompressed 4K (at max) signal. Comprehensive audio capacities including PCM, Dolby Digital, DTS and DTS-HD. It also provides an ARC audio output socket to transfer ARC audio to ARC speakers and amplifiers.