4K@120Hz HDMI Splitter 1 in 2 Out - 8K@60Hz Mirror Performance

In this review the MT-VIKI 4K@120Hz HDMI Splitter is examined for users who need to mirror a single high-bandwidth source to two displays. The bottom line: it is a practical choice when you want simultaneous output to two monitors at up to 8K@60Hz or 4K@120Hz, provided your source, cables and displays all support those resolutions. The unit is aluminum shelled, relatively compact, and focuses on exact duplication rather than switching or audio return features, so it works best when mirror output and signal integrity are the priority.

Key Features

• Dual mirror output: Mirrors one HDMI source to two displays so both screens show identical video without manual switching.
• High resolution support: Handles up to 8K@60Hz (4:4:4) and 4K@120Hz for smoother motion on compatible displays and sources.
• HDMI 2.1 and HDCP2.3: Ensures compatibility with modern video sources and protected content on compliant displays.
• EDID management: Basic EDID handling helps negotiate compatible resolutions when connected displays differ.
• Cascade capable: Supports cascade connections so one source can be duplicated to multiple extents when needed.
• Included power adapter: Ships with a DC5V adapter so the powered splitter maintains stable 40Gbps bandwidth for high resolutions.

Who It's For

The MT-VIKI splitter is aimed at home theater enthusiasts, content creators, or demo setups that need identical output on two screens, especially where high frame rates or resolutions matter, such as gaming PCs or 4K/8K media players. If you already have HDMI 2.1 source devices and high-speed cables, this unit will let you use the same feed on two displays without switching hassles.

It is not for users who need an HDMI switch (2 in 1 out), ARC or eARC audio return, or independent outputs with different resolutions; the device duplicates the source and will default to lower common resolutions if displays differ (for example if one display is 4K and the other is 8K both outputs become 4K).

Pros & Cons

Pros

• Reliable mirroring to two displays at high resolutions with HDMI 2.1 support.
• Supports modern audio formats and video features like DTS-HD and VRR for gaming and AV use.
• Aluminum shell offers a sturdy build and compact footprint for AV racks or desktop setups.

Cons

• Does not function as an HDMI switch (not 2 in 1 out) and lacks ARC/eARC support, limiting some audio setups.
• If connected displays differ in capability, the splitter will reduce output to the lower common resolution.

Specifications

Our Verdict

The MT-VIKI HDMI splitter is a sensible, value-focused tool for anyone who needs faithful duplication of a modern HDMI source to two displays at high resolution. It delivers the necessary HDMI 2.1 bandwidth, HDCP2.3 compliance, and a durable aluminum shell, making it a good pick for gaming setups, demo stations, and dual-monitor video playback-so long as you do not need switching or ARC audio features.

Frequently Asked Questions

Can it act as an HDMI switch?
No. This device only duplicates one input to two outputs and does not switch between multiple inputs.

Will it pass 8K to both displays if one display is 4K?
No. If one monitor is 4K and the other is 8K, both outputs will default to 4K to match the lower-capability display.

Are HDMI cables and source required to be special?
Yes. To achieve 8K@60Hz or 4K@120Hz you must use HDMI 2.1-capable cables and a source and displays that support those resolutions.