Fancyleds HDMI 2.1 Fancy Sync Box Syncing Device - 4K 120Hz Immersion

In this review of the Fancyleds HDMI 2.1 Fancy Sync Box Syncing Device, the bottom line is simple: this box is aimed at TV owners who want accurate, low-latency ambient lighting for movies and gaming without relying on a camera. The single biggest reason to buy is its HDMI 2.1 chipset that supports 4K 120Hz and HDR metadata passthrough so LEDs reflect on-screen colors more faithfully, creating a more immersive experience on 24 in to 55 in TVs when used with a compatible HDMI source.

Key Features

• HDMI 2.1: Supports 4K 120Hz, VRR, ALLM and HDR so action and fast motion remain smooth while colors and brightness data pass through accurately.
• RGBW LED support: Uses RGBW strips to reproduce deeper whites and better skin tones by adding a dedicated white diode alongside RGB control.
• Low latency syncing: High-speed processing minimizes lag between on-screen content and the ambient lights for an uninterrupted viewing or gaming session.
• Universal power adaptor: Ships with a universal adaptor compatible with US, EU, AU and UK sockets for simple international setup.
• HDCP 2.3 compliant: Ensures streaming services play in supported resolutions without copyright-induced black screens.

Who It's For

The Fancy Sync Box is best for corded setups that use an external HDMI device such as a streaming box or console; it is ideal for gamers and movie watchers who want accurate, responsive ambient lighting and need support for next-gen features like VRR and ALLM. People using a Smart TV app should note that apps on the TV itself are not synced - only apps on a connected HDMI device will synchronize lights.

It is not recommended for use with a PC, and users who rely on in-TV apps or want a camera-based ambient solution should look elsewhere. Also check the list of compatible HDMI devices before buying to ensure your source will work with the sync box.

Pros & Cons

Pros

• Excellent passthrough of HDR and metadata thanks to the HDMI 2.1 chipset for vivid LED colors.
• Fast, near-instant color reaction reduces distracting delays during gameplay and movie playback.
• Includes RGBW LED support and a universal power adaptor for better whites and simple global use.

Cons

• Requires a compatible external HDMI device to sync; Smart TV apps are not supported by the box itself.
• Some customers report mixed functionality and color accuracy, so results may vary depending on source device and setup.

Specifications

Our Verdict

The Fancyleds HDMI 2.1 Fancy Sync Box is a practical choice for anyone with a compatible HDMI source who wants fast, accurate ambient lighting at a reasonable price. It delivers next-gen passthrough features and RGBW support that improve color fidelity and immersion, but prospective buyers should confirm compatibility with their HDMI device and accept that results can vary by source.

Frequently Asked Questions

Do TV apps sync with this box?
No. Apps on your Smart TV are not synced; only apps and content played through a connected compatible HDMI device will sync.

Can I use this with a PC?
Use with a PC is not recommended by the manufacturer; it is designed for set-top and console HDMI sources.

Will streaming services play in 4K?
Yes. The box is HDCP 2.3 compliant and supports 4K streaming when the connected HDMI device and service offer 4K output.