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CXSP-12H21 1×2 HDMI 2.1 Splitter – 8K@60Hz / 4K@120Hz with VRR & ALLM

  • 1 HDMI Input / 2 HDMI Outputs
    Split a single HDMI source signal to two displays simultaneously.

  • HDMI 2.1 Ultra-High Resolution
    Supports 8K@60Hz and 4K@120Hz with compatibility for modern HDMI 2.1 devices.

  • Dolby Vision & HDCP 2.3 Support
    Ensures stable playback of protected HDR content with enhanced visual quality.

  • Gaming Optimization
    Supports VRR (Variable Refresh Rate) and ALLM (Auto Low Latency Mode) for smoother gaming performance.

  • Dolby Atmos Audio Support
    Compatible with advanced multi-channel audio formats for immersive sound.

  • EDID Management
    Automatically manages display compatibility for optimal resolution output.

  • 3D & Deep Color Support
    Supports 3D video and deep color up to 30-bit / 36-bit for enhanced visual fidelity.

  • Wide Media Compatibility
    Works with Blu-ray players, gaming consoles, streaming devices, and media players.

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Product Description

The CXSP-12H21 HDMI 2.1 Splitter enables a single HDMI source to be distributed to two displays while maintaining ultra-high-resolution video and advanced audio performance. Supporting 8K@60Hz and 4K@120Hz, it is designed for modern entertainment systems, gaming setups, and professional AV installations.

With support for Dolby Vision, HDCP 2.3, VRR, and ALLM, the splitter ensures smooth video performance for gaming consoles and high-refresh displays. The device also supports Dolby Atmos audio, delivering immersive sound for compatible systems.

Ideal for dual-display gaming setups, home theaters, digital signage, and professional AV systems, the CXSP-12H21 provides reliable HDMI 2.1 signal distribution with stable performance.

Specifications

Model CXSP-12H21 (SP12H21)
HDMI Input 1
HDMI Outputs 2
HDMI Version HDMI 2.1
Max Resolution 8K@60Hz / 4K@120Hz
HDR Support Dolby Vision
HDCP HDCP 2.3
Gaming Features VRR, ALLM
Audio Support Dolby Atmos
EDID Management Supported

FAQ

Most frequent questions and answers

ExtendHD solutions work seamlessly with TVs, projectors, monitors, sound systems, and most standard HDMI-enabled devices.

No. Most ExtendHD products are plug-and-play. Advanced units may offer optional PC-based control for customization.

Absolutely. Our products are designed for professional-grade performance, suitable for offices, retail, classrooms, and home theaters.

Depending on the model, our HDMI extenders support distances up to 100 meters using CAT6/7 cables.

We offer dedicated customer support, user manuals, and setup assistance to ensure smooth installation and usage.

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ExtendHD delivers premium AV solutions—designed for seamless connectivity, professional performance, and reliable signal distribution across any environment.