ROFAVEZCO HDMI 2.1 Splitter 1x2 4K120Hz 8K60Hz

ROFAVEZCO HDMI 2.1 Splitter duplicates a single HDMI 2.1 source to two displays, supporting up to 8K@60Hz or 4K@120Hz with EDID scaling and passthrough audio formats like Dolby Atmos.

This compact aluminum HDMI splitter is built for gamers, creators, and AV setups that need a mirrored output to two screens or projectors. It handles modern high-bandwidth signals, supports HDMI 2.1 features such as VRR and ALLM where compatible, and offers EDID options and a downscaler to help match display capabilities. The unit focuses on signal duplication (mirror/copy), not screen extension, and requires good quality HDMI cables for full performance.

How does the splitter handle high-refresh gaming like PS5 or Xbox Series X?

The ROFAVEZCO splitter can pass 4K@120Hz or 1080P@120Hz to two displays simultaneously, depending on the displays and cables used. It supports VRR and ALLM where the source and display chain also support those features.

• Passes up to 4K@120Hz and 8K@60Hz where supported by displays and cables.
• Maintains VRR/ALLM when the entire chain is compatible.
• Downscales automatically to 1080P@120Hz if required for sync on some outputs.
• Best used with certified HDMI 2.1 cables under 3 m to avoid signal issues.

Can I use this for my sound system and advanced audio formats?

The splitter carries multichannel audio formats including Dolby Atmos, DTS:X and lossless Dolby/DTS variants, passing these formats through to compatible AV receivers or soundbars. Note that ARC/eARC two-way features (Sonos ARC/eARC CEC bi-directional) are not supported.

• Supports Dolby Atmos, DTS:X, Dolby TrueHD, DTS-HD Master Audio, and PCM up to 7.1.
• Pass-through only; does not convert ARC/eARC signals or perform two-way CEC control.
• Audio integrity depends on source and target device support for each codec.
• Use direct HDMI connections to AV receivers for best audio results.

What setup steps and cables deliver reliable performance?

Simple setup: connect your source to the splitter input, then connect each display to the outputs and power the unit via the supplied Type-C cable. Performance hinges on using certified HDMI 2.1 cables under ~3 m; poor or noncompliant cables often cause picture blur, sync issues, or dropouts.

• Power with the included Type-C cable and use certified HDMI 2.1 cables less than 10 ft (3 m).
• Choose EDID profiles to prioritize output resolution or use COPY to read OUT1 automatically.
• When outputting 4K@120Hz, the downscaler option provides 1080P@120Hz on the secondary output if needed.
• Verify source and displays support required HDMI 2.1 features for full bandwidth.

What limitations should I expect before buying?

The splitter is designed for mirroring (copy) not extending desktops, and it will not convert HDR Dolby Vision to SDR or support every 8K 4:4:4 48Gbps scenario. Some advanced combinations like 60Hz and 120Hz working in perfect sync across two different displays may not be achievable.

• Does not extend screens — only duplicates the source image on both outputs.
• Does not convert Dolby Vision HDR to SDR; downscale behavior varies.
• Not compatible with Sonos ARC/eARC bi-directional CEC functions.
• Not guaranteed for 8K@60Hz 4:4:4 at full 48Gbps bandwidth with all devices.

Who is this for: The ROFAVEZCO HDMI 2.1 Splitter suits gamers, streamers, AV installers and content creators who need a reliable mirrored output to two displays or projectors while preserving high refresh rates and advanced audio formats. Choose this unit if you need strong passthrough for 4K@120Hz or 8K@60Hz signals, want EDID/scaler control, and will use certified high-speed HDMI cables. If you require screen extension, ARC/eARC two-way control, or guaranteed conversion of HDR formats, consider other specialized devices.