This product features signal buffering and amplification, enabling long-distance transmission of over 15 meters through cascading. Significantly increase the number of High Definition Multimedia Interface output ports by stacking, allowing one signal source to distribute to multiple receiving sources and easily connect to multi-channel audio receiving devices. Crafted with exquisite workmanship, the interface utilizes gold-plating technology for superior oxidation and corrosion resistance, ensuring smooth signal transmission and clear images. Employs a high-performance main control chip to resolve instability issues like image distortion, ghosting, and smearing. The heavy-duty cold metal casing efficiently absorbs and dissipates heat, protecting internal components and keeping the device cool. The hollow design on both sides further aids in rapid heat dissipation for extended lifespan. Achieve output image resolutions up to 4K at 60Hz, compliant with High Definition Multimedia Interface 2.0 standards and backward compatible with HDCP 2.2 protocol for clearer and smoother picture quality.