The SL-U61 is a multi-signal seamless switcher with 6 inputs and 1 output for video and audio that supports 4K60/4:4:4 HDMI signals. HDMI, DVI, analog RGB, analog component, composite video, and S-video signals are supported for video input, and each signal is scan-converted to any resolution and output. Video output can be split into two outputs to HDMI/DVI and Cat5e/6, and video signal switching achieves noiseless switching with effects such as cutouts and fades. In addition to the analog stereo audio input corresponding to the video input and the digital audio embedded in HDMI, the audio input is equipped with one analog stereo auxiliary input. It has a lip sync function. In addition, video and audio can be switched independently.