The Fancy Sync Box 2.1 is an HDMI 2.1 sync box that adds RGBW LED backlighting behind your TV, matching on-screen colors with true HDR support. It passes through 4K at up to 144Hz and 8K at 60Hz, with VRR, ALLM, and Dolby Vision. It suits gamers and movie watchers who want immersive bias lighting without sacrificing picture quality. Compared to HDMI 2.0 sync boxes, it offers higher bandwidth and HDR-aware syncing, but it has only one HDMI input, so you'll need a switcher for multiple devices.
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Reviewers rate the Fancy Sync Box 2.1 highly for its accurate HDR color syncing and seamless HDMI 2.1 passthrough. Gamers appreciate the high refresh rate support and low lag, while movie fans enjoy the immersive lighting. The main drawback cited is the single HDMI input, which limits connectivity for users with multiple sources.
The 2.1 Fancy Sync Box is an HDMI 2.1 sync box with HDR syncing. A dedicated HDMI 2.1 chip reads the HDR color on screen and drives the included RGBW LED strip to match it, so the wall behind the TV glows with the colors of what is playing.
The picture passes through the box untouched. Games run at up to 4K 144Hz and movies at 8K 60Hz, with HDR and Dolby Vision preserved. VRR switches between 144Hz, 120Hz, and 60Hz. ALLM keeps input lag low. HDMI-CEC lets one remote control the TV and light settings.
To set it up, connect an HDMI device such as a console or streaming stick to the box's single HDMI input. Run one HDMI cable from the box to the TV. Mount the LED strip behind the screen, and the lights follow the on-screen color. The box is designed for TVs and is not compatible with PC monitors.