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

  • 1 HDMI Input / 2 HDMI Outputs
    Split one HDMI source to two displays simultaneously.

  • HDMI 2.1 Ultra-High Resolution
    Supports 8K@60Hz and 4K@120Hz with next-generation HDMI 2.1 bandwidth.

  • Dolby Vision & HDCP 2.3 Support
    Ensures compatibility with protected HDR content and modern streaming devices.

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

  • ARC Audio Support
    Allows audio return to soundbars or AV receivers through HDMI.

  • EDID Management
    Automatically synchronizes source and display capabilities for stable signal output.

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

  • Dolby Atmos Audio Compatibility
    Supports advanced multi-channel audio formats for immersive sound.

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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 support. Designed for modern AV systems, it supports 8K@60Hz and 4K@120Hz, making it suitable for gaming consoles, streaming devices, and high-end displays.

With support for Dolby Vision, HDCP 2.3, VRR, and ALLM, the splitter delivers smooth video performance for next-generation gaming and entertainment systems. The integrated ARC functionality allows audio signals to be returned to soundbars or AV receivers for improved sound system integration.

Ideal for dual-display gaming setups, home theaters, digital signage installations, and professional AV environments, the CXSP-12H21 offers 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
ARC Support Yes
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.