8x8 HDMI 2.0 Matrix Switcher with Audio outputs supporting 4K/60Hz
Amazon.co.jp: HDMI Matrix Switch Splitter 4 Input 2 Output, 4K 60Hz, Support 3D Video Format, HDMI 2.0 HDR, RGB 8:8:8, 4 x 2, EDID, SPDIF 5.1H, L/R 3.5mm Audio Extractor, IR Remote Control : Electronics