The best HDMI sync boxes match your TV size and HDMI requirements while keeping color response and setup manageable. I’d make the Govee HDMI 2.1 AI Sync Box 2 my best overall pick for its HDMI 2.1 support and included RGBWIC backlight, while the Philips Hue Play HDMI Sync Box 4K suits buyers already invested in Hue lighting. For a large screen on a simpler HDMI 2.0 setup, the Linkind TV Backlight Kit is a standout alternative. The main tradeoffs are HDMI bandwidth and format support, screen-size fit, and whether you want a bundled light strip or a system that works with separate lights. Read on for the full comparison and guidance on choosing the right box for your setup.
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Key Takeaways
- Govee’s HDMI 2.1 AI Sync Box 2 earns the overall lead by pairing newer HDMI support with a bundled RGBWIC backlight; its listed 55–65-inch fit makes TV size a deciding factor.
- Philips Hue Play HDMI Sync Box 4K and the similarly named Philips Smart Lighting kit serve different priorities: the Hue box favors buyers already using Hue, while the RGBIC kit includes a backlight.
- Linkind’s HDMI 2.0 kit is the large-TV option among the listed models, with a 20-foot strip for 55–90-inch screens, but HDMI 2.0 may be a mismatch for newer high-bandwidth sources.
- Fancyleds offers several distinct size and port choices, including a 24–55-inch HDMI 2.1 kit, a 70–95-inch three-port model, and a 70–90-inch HDMI 2.0 option; check the exact listing rather than relying on brand name alone.
- HDMI 2.1 labels do not settle the decision by themselves. TV fit, included strip dimensions, number of source connections, and whether the lighting system fits your existing setup all affect the better buy.
| Fancyleds HDMI 2.1 TV Sync Box with RGBW LED Backlight for 24–55-Inch TVs |  | Best for Smaller HDMI 2.1 Setups | Model: FSB1P2.1 | TV size compatibility: 24–55 inches | HDMI: 2.1 | VIEW LATEST PRICE | See Our Full Breakdown |
| Govee HDMI 2.1 AI Sync Box 2 with RGBWIC TV Backlight, for 55–65 Inch TVs |  | Best for Smart-Home Integration | Interface: HDMI 2.1 | Maximum resolution and refresh rate: 8K at 60Hz; 4K at 144Hz | TV size compatibility: 55–65 inches | VIEW LATEST PRICE | See Our Full Breakdown |
| Linkind TV Backlight Kit with HDMI 2.0 Sync Box, 20 ft, for 55–90 in TVs |  | Best for Large TVs on a Simpler HDMI Setup | Model: LS06001 | TV size compatibility: 55–90 inches | Light strip length: 20 ft | VIEW LATEST PRICE | See Our Full Breakdown |
| ROOKIELEDS HDMI 2.1 Sync Box R1 Backlight Kit for 39–65-Inch TVs |  | Best for Feature-Rich HDMI 2.1 Gaming | TV compatibility: 39–65 inches | HDMI bandwidth: 48 Gbps | Supported resolutions and refresh rates: 4K at 144Hz; 8K at 60Hz | VIEW LATEST PRICE | See Our Full Breakdown |
| WiZ Connected HDMI Sync Box with RGBIC TV Backlight for 75–85-Inch TVs |  | Best for Large 4K/60 TVs and WiZ Lighting | Model number: 640060 | TV size compatibility: 75–85 inches | HDMI inputs: 1 | VIEW LATEST PRICE | See Our Full Breakdown |
| Philips Hue Play HDMI Sync Box 4K |  | Best for Hue Lighting Setups | Model: Sync Box 4K (610618) | Connectivity: HDMI, Bluetooth, Zigbee | Resolution: 4K (3840 pixels) | VIEW LATEST PRICE | See Our Full Breakdown |
| Fancyleds 3-Port HDMI 2.1 Sync Box with RGBW LED Backlight for 70–95-Inch TVs |  | Best for Large-Screen HDMI 2.1 Gaming | Model: FSB3P2.1 | HDMI inputs: 3 HDMI 2.1 | Supported signals: Up to 4K at 144Hz and 8K at 60Hz | VIEW LATEST PRICE | See Our Full Breakdown |
| homilumi HDMI Sync Box with Cuttable TV Backlight LED Strip, 16.4 ft |  | Best for Flexible Mid-Size TV Installation | Model: XW-LS-1 | Strip length: 16.4 ft | TV compatibility: 40–65-inch TVs | VIEW LATEST PRICE | See Our Full Breakdown |
| Fancyleds 2.0 HDMI Sync Box with RGB TV Backlight for 70–90-Inch TVs |  | Best for 4K/60 Large TVs | Model: FSB1P2.0 | Connectivity: HDMI 2.0b | Video support: 4K at 60Hz with HDR and Dolby Vision | VIEW LATEST PRICE | See Our Full Breakdown |
| Linkind HDMI 2.1 Sync Box with TV Backlight |  | Best for High-Refresh-Rate Versatility | HDMI support: HDMI 2.1 passthrough | Maximum resolution and refresh rate: 8K at 60Hz; 4K at 120Hz | HDR formats: HDR10+, Dolby Vision | VIEW LATEST PRICE | See Our Full Breakdown |
| Philips Smart Lighting HDMI Sync Box with RGBIC TV Backlight, for 55–65-Inch TVs |  | Best for WiZ Homes | TV size: 55–65 inches | Video input: HDMI 2.0 external source | Video support: 4K at 60Hz, HDR10+, Dolby Vision | VIEW LATEST PRICE | See Our Full Breakdown |
| LightingWill HDMI 2.0 Sync Box TV Backlight Kit for 50–65 Inch TVs |  | Best for Multiple HDMI Sources | TV size: 50–65 inches | LED strip length: 9.8 feet | LED density: 72 LEDs per meter | VIEW LATEST PRICE | See Our Full Breakdown |
| Philips Hue Play HDMI Sync Box |  | Best for Existing Hue Setups | HDMI inputs: 4 | Compatible device: Television | Connector: HDMI | VIEW LATEST PRICE | See Our Full Breakdown |
More Details on Our Top Picks
Fancyleds HDMI 2.1 TV Sync Box with RGBW LED Backlight for 24–55-Inch TVs
For a smaller screen and a high-refresh-rate source, this Fancyleds kit pairs HDMI 2.1 pass-through with an RGBW strip, including a dedicated white channel for less color-tinted ambient light. It supports up to 4K at 144Hz or 8K at 60Hz, so it suits capable consoles and other external HDMI gear better than the Linkind HDMI 2.0 kit, which tops out at 4K HDR at 30 fps. Its 24–55-inch fit also fills a gap left by larger-screen options such as the WiZ Connected box, built for 75–85-inch TVs. The tradeoff is a strict dependence on external HDMI video: smart TV apps will not sync, and PC use is not recommended. I’d choose it for a compact, console-focused setup, not as an all-purpose TV lighting system.
Pros:- Supports 4K at up to 144Hz and 8K at 60Hz.
- RGBW LEDs include a dedicated white channel for more natural white backlighting.
- Fits smaller 24–55-inch TVs that larger kits in this roundup may not suit.
- Includes a universal power adapter, HDMI cable, and corner brackets.
Cons:- Built-in smart TV apps do not sync; content must come from an external HDMI device.
- PC use is not recommended.
- Its screen-size range is less suitable for larger living-room TVs than the WiZ Connected kit.
Best for: Owners of 24–55-inch TVs who want high-refresh-rate HDMI 2.1 gaming from a compatible console or other external source.
Not ideal for: Viewers who mainly use built-in streaming apps or PC gaming, since those sources are not supported for syncing.
- Model:FSB1P2.1
- TV size compatibility:24–55 inches
- HDMI:2.1
- Video support:4K up to 144Hz; 8K at 60Hz
- Supported features:HDR, DV, ARC, ALLM, VRR, HDCP compliant
- LED type and density:RGBW; 96 LEDs per meter
- Power:12 volts
- Warranty:2 years
Our verdict“Choose this Fancyleds kit for a smaller TV and HDMI 2.1 gaming sources, but skip it if your viewing centers on smart TV apps or a PC.”
Govee HDMI 2.1 AI Sync Box 2 with RGBWIC TV Backlight, for 55–65 Inch TVs
Govee is the strongest fit here for buyers who want an HDMI sync box to join a wider lighting setup. Its RGBWIC strip works with DreamView, while Matter, Alexa, app, and voice control add more ways to manage lighting than the straightforward Fancyleds HDMI 2.1 kit. Video support reaches 4K at 144Hz and 8K at 60Hz, with VRR and ALLM for compatible gaming sources. The 55–65-inch sizing is narrower than the Linkind kit’s 55–90-inch range, so measure before choosing. There are practical limits: it does not automatically switch between multiple connected devices, and color saturation can drop with HDR, HDR10+, or Dolby Vision. I’d favor Govee for connected-home flexibility; buyers who value a simpler strip or fewer ecosystem features may prefer another option.
Pros:- Supports 4K at 144Hz and 8K at 60Hz, with VRR and ALLM.
- Matter and Alexa support add smart-home control options.
- RGBWIC lighting works with Govee DreamView.
- Combines app and voice control with a 55–65-inch TV fit.
Cons:- Does not automatically switch signals among multiple connected devices.
- Color saturation may decrease with HDR, HDR10+, or Dolby Vision.
- Designed for indoor use and is not water resistant.
Best for: Owners of 55–65-inch TVs who want HDMI 2.1 gaming support and lighting integrated with Matter, Alexa, or Govee DreamView.
Not ideal for: People who frequently switch among several HDMI sources and expect the box to change inputs automatically, or who prioritize consistent color saturation with HDR formats.
- Interface:HDMI 2.1
- Maximum resolution and refresh rate:8K at 60Hz; 4K at 144Hz
- TV size compatibility:55–65 inches
- Lighting:RGBWIC LED strip; 75 LEDs/m
- Brightness:450 lumens/m
- Supported features:VRR, ALLM, Dolby Vision, Dolby Atmos
- Connectivity:HDMI, Bluetooth, Wi-Fi
- Smart-home support:Matter; Alexa support
Our verdict“Pick Govee if smart-home control and DreamView matter as much as HDMI 2.1 support, but look elsewhere for automatic input switching or steadier HDR color.”
Linkind TV Backlight Kit with HDMI 2.0 Sync Box, 20 ft, for 55–90 in TVs
The Linkind kit stands out for its 20-foot trimmable strip and broad 55–90-inch TV fit, making it the most adaptable option here for a large screen. Its HDMI 2.0 sync box reads video from an external HDMI source, so the lighting reacts without camera calibration; app customization, compatible voice control, and four music modes add flexibility beyond the basic sync function. Compared with the HDMI 2.1 Fancyleds and Govee boxes, though, Linkind gives up high-refresh-rate support: its 4K HDR pass-through is limited to 30 fps. That is a meaningful restriction for fast-moving games and higher-frame-rate sources. Built-in TV apps also remain outside its reach. I’d rank it for buyers who prioritize a long, adjustable strip and wide screen compatibility over HDMI 2.1 performance.
Pros:- 20-foot strip can be trimmed to suit a range of large TV sizes.
- Supports real-time sync from external HDMI sources without camera calibration.
- App customization and compatible Alexa and Google Assistant functions provide control options.
- Four music sync modes add a separate way to use the lights.
Cons:- 4K HDR pass-through is limited to 30 fps, unlike the HDMI 2.1 options in this roundup.
- Built-in TV apps do not sync.
- Requires an external HDMI source for video-based lighting.
Best for: Owners of 55–90-inch TVs who want a long, trimmable backlight strip and watch HDMI-connected video at up to 4K HDR 30 fps.
Not ideal for: Console and PC gamers seeking high-refresh-rate 4K, or viewers who rely on built-in smart TV apps for synced lighting.
- Model:LS06001
- TV size compatibility:55–90 inches
- Light strip length:20 ft
- Video pass-through:HDMI 2.0; up to 4K HDR at 30 fps
- Light source and color:LED; multicolor RGB
- Music sync modes:4
- Control:AiDot app; compatible Alexa and Google Assistant functions
- Use:Corded electric; indoor
Our verdict“Choose Linkind for its long, adjustable strip and large-TV fit if 4K HDR at 30 fps is sufficient for your sources.”
ROOKIELEDS HDMI 2.1 Sync Box R1 Backlight Kit for 39–65-Inch TVs
The ROOKIELEDS R1 is a feature-heavy pick for a gaming setup where a wide range of HDMI 2.1 capabilities matters. It supports 48 Gbps bandwidth, 4K at 144Hz, 8K at 60Hz, VRR, and ALLM, with QFT and bypass features adding flexibility for compatible equipment. Its five-color RGBCW-IC lighting also allows adjustable whites and amber tones, rather than relying on the simpler RGB strip in Linkind’s HDMI 2.0 kit. The tradeoff is a list of unsupported features: DSC, eARC, and QMS are absent, so buyers should check their system needs rather than assume full HDMI 2.1 coverage. Like the Fancyleds HDMI 2.1 option, it also requires an external source and does not sync built-in apps. I’d choose it for gaming-focused feature breadth, not for an app-led or all-device setup.
Pros:- Supports 4K at 144Hz and 8K at 60Hz over 48 Gbps HDMI bandwidth.
- Includes VRR, ALLM, QFT, Dolby Vision, HDR10, and HDR10+ support.
- Five-color RGBCW-IC mixing allows adjustable whites and amber tones.
- Compact sync box includes an HDMI 2.1 cable and corner brackets.
Cons:- Does not support DSC, eARC, or QMS.
- Built-in smart TV apps are not supported; syncing requires an external HDMI source.
- Lighting color and saturation may vary from the screen image, especially with HDR formats.
Best for: Console gamers with 39–65-inch TVs who want 4K at 144Hz, VRR, ALLM, and adjustable multi-color backlighting from an external HDMI source.
Not ideal for: Buyers whose setup depends on DSC, eARC, or QMS, or viewers who expect lighting to sync with built-in TV apps.
- TV compatibility:39–65 inches
- HDMI bandwidth:48 Gbps
- Supported resolutions and refresh rates:4K at 144Hz; 8K at 60Hz
- Lighting:RGBCW-IC, 5-color mixing; 48 LEDs/m
- Supported features:FRL6, VRR, ALLM, QFT, Dolby Vision, HDR10, HDR10+, CEC bypass, ARC bypass
- Unsupported features:DSC, eARC, QMS
- Power:12 V DC, 3 A, 36 W
- Warranty:1 year
Our verdict“Choose the R1 for broad HDMI 2.1 gaming features and five-color lighting, provided your setup does not require DSC, eARC, or QMS.”
WiZ Connected HDMI Sync Box with RGBIC TV Backlight for 75–85-Inch TVs
For a large 75–85-inch TV, the WiZ Connected box offers a focused alternative to Linkind’s broader 55–90-inch kit. Its RGBIC backlight syncs with external HDMI video up to 4K at 60Hz, and support for HDR10+ and Dolby Vision suits compatible movie sources. Preset effects, adjustable saturation and intensity, and microphone-based music response provide more than video matching; WiZ lights can also join over Wi-Fi and Bluetooth. The main constraint is the single HDMI input. Unlike a multi-device setup with an HDMI switcher, switching among sources requires extra hardware, and the box will not sync built-in TV apps. It also lacks the 4K 144Hz support offered by the Fancyleds and Govee HDMI 2.1 models. I’d pick WiZ for a large-screen, 4K/60 entertainment setup already using its lighting, not for high-refresh gaming.
Pros:- Designed for large 75–85-inch TVs.
- Supports 4K at 60Hz, HDR10+, and Dolby Vision.
- RGBIC lighting offers adjustable saturation, intensity, and preset effects.
- Can link with additional WiZ lights and respond to music through its built-in microphone.
Cons:- One HDMI input means multiple connected devices require a separate HDMI switcher.
- Does not sync with built-in smart TV apps.
- Limited to 4K at 60Hz, below the 4K 144Hz capability of the HDMI 2.1 options.
Best for: Owners of 75–85-inch TVs who watch 4K/60 HDMI sources and want synced backlighting to work alongside other WiZ lights.
Not ideal for: High-refresh-rate gamers, smart-TV-app-first viewers, or households that need several HDMI sources connected without a separate switcher.
- Model number:640060
- TV size compatibility:75–85 inches
- HDMI inputs:1
- Backlight strip length:11.15 ft
- Video support:4K at 60Hz, HDR10+, Dolby Vision
- Lighting type:RGBIC
- Music sync:Built-in microphone
- Smart-home compatibility:Google Assistant, Alexa
Our verdict“Choose WiZ for a large 4K/60 TV and an existing WiZ lighting setup, but skip it if you need high-refresh gaming or multiple direct HDMI inputs.”
Philips Hue Play HDMI Sync Box 4K
The Philips Hue Play HDMI Sync Box 4K is the natural fit for buyers who already use Hue lights and want to coordinate them around HDMI video. With a Hue Bridge, it can sync up to 10 lights, giving a room-wide setup more flexibility than the single included backlight kits from Fancyleds or homilumi. Its 4K at 60Hz support and HDR10/HDR10+ compatibility suit many streaming boxes and consoles, though it lacks the higher refresh-rate passthrough offered by the Linkind HDMI 2.1 Sync Box. The compact box and Hue app control help keep the setup tidy and configurable. The tradeoffs are significant for some: a Bridge is needed for multi-light syncing, it is sold separately, and built-in TV apps do not sync. I’d choose it for a Hue room, not as a standalone all-in-one kit.
Pros:- Coordinates up to 10 lights when paired with a Hue Bridge.
- Supports 4K at 60Hz and HDR10 and HDR10+.
- Hue app offers entertainment-area setup and lighting customization.
- Compact design suits crowded media consoles.
Cons:- Does not sync video from built-in smart TV apps.
- Hue Bridge is sold separately for syncing multiple lights.
- Its 60Hz limit is less suited to high-refresh-rate gaming than the Linkind HDMI 2.1 Sync Box.
Best for: Hue owners who want HDMI video to coordinate with several existing Hue lights and are comfortable adding a Bridge.
Not ideal for: Viewers who primarily use built-in smart TV apps, want 4K at 120Hz, or need an included LED strip and multi-light hardware.
- Model:Sync Box 4K (610618)
- Connectivity:HDMI, Bluetooth, Zigbee
- Resolution:4K (3840 pixels)
- Refresh rate:60Hz
- HDR formats:HDR10, HDR10+
- Light syncing:Up to 1 light via Bluetooth; up to 10 lights with a Hue Bridge
- Control:App control
- Color:Black
Our verdict“Choose this if your Hue ecosystem matters more than high-refresh-rate passthrough or an included backlight strip.”
Fancyleds 3-Port HDMI 2.1 Sync Box with RGBW LED Backlight for 70–95-Inch TVs
For a large TV and several newer consoles or players, the Fancyleds 3-Port HDMI 2.1 Sync Box combines three HDMI 2.1 inputs with an included RGBW backlight sized for 70–95-inch TVs. Its support for 4K at 144Hz and 8K at 60Hz, plus VRR and ALLM, gives it a stronger gaming fit than the HDMI 2.0b Fancyleds 2.0 model, which tops out at 4K 60Hz. The included strip, corner brackets, and universal power adapter make this a more complete large-screen kit than Philips Hue’s box, which is designed to work with separate Hue lights. The limits narrow its audience: smart TV apps are not supported, PC use is not recommended, and smaller TVs may not suit the strip. I’d shortlist it for console-focused setups, not mixed PC-and-TV systems.
Pros:- Three HDMI 2.1 inputs accommodate multiple external sources.
- Supports up to 4K at 144Hz and 8K at 60Hz.
- Includes an RGBW strip, corner brackets, HDMI cable, and universal power adapter.
- Supports HDR, Dolby Vision, ARC, ALLM, and VRR.
Cons:- Built-in smart TV apps do not sync.
- PC use is not recommended.
- The included strip is sized for 70–95-inch TVs, limiting fit for smaller screens.
Best for: Console gamers with a 70–95-inch TV who want HDMI 2.1 passthrough, multiple connected sources, and an included backlight.
Not ideal for: PC users, owners of smaller TVs, or viewers who rely on built-in TV apps rather than external HDMI devices.
- Model:FSB3P2.1
- HDMI inputs:3 HDMI 2.1
- Supported signals:Up to 4K at 144Hz and 8K at 60Hz
- Supported features:HDR, Dolby Vision, ARC, ALLM, VRR
- LED type:RGBW
- LED density:96 LEDs per meter
- Compatible TV size:70–95 inches
- Included components:Sync box, RGBW LED strip, universal power adapter, HDMI cable, corner brackets
- Warranty:2 years
Our verdict“Pick this for a large, console-centered setup that can use its HDMI 2.1 features and included RGBW strip.”
homilumi HDMI Sync Box with Cuttable TV Backlight LED Strip, 16.4 ft
The homilumi HDMI Sync Box is a practical choice for 40–65-inch TVs when the backlight needs to be trimmed to fit the screen. Its 16.4-foot cuttable, multi-zone strip gives installers more flexibility than the fixed-size large-TV strip bundled with the Fancyleds 3-Port box. App control through Tuya or Smart Life, voice support, preset scenes, and music modes add options beyond video syncing. It handles 4K at 60Hz, so it suits standard streaming and console setups, but it does not match the Linkind HDMI 2.1 Sync Box’s 4K at 120Hz capability. Like the other HDMI-based kits here, it needs an external source; built-in TV apps won’t sync. I’d favor it when strip fit and smart-home controls matter more than high-refresh-rate passthrough.
Pros:- Cuttable 16.4-foot strip adapts to different TV layouts.
- Multi-zone color control supports more tailored lighting effects.
- Tuya and Smart Life apps offer presets and music sync modes.
- Works with Alexa, Google Assistant, and compatible HDMI sources.
Cons:- Requires an external HDMI source and does not sync built-in TV apps.
- 4K support is limited to 60Hz, below the Linkind HDMI 2.1 Sync Box’s 4K 120Hz capability.
Best for: Owners of 40–65-inch TVs who want a cut-to-fit backlight, multi-zone effects, and app or voice control.
Not ideal for: Viewers who watch mainly through built-in TV apps or gamers seeking 4K at 120Hz passthrough.
- Model:XW-LS-1
- Strip length:16.4 ft
- TV compatibility:40–65-inch TVs
- Video support:4K at 60Hz
- Lighting:Multicolor, dimmable, multi-zone LED
- Control:Tuya or Smart Life app, Alexa, Google Assistant
- Power:Corded electric; 5 W
- Weight:1.1 lb
- Warranty:2 years
Our verdict“Choose homilumi if flexible strip fitting and smart-home control matter more than high-refresh-rate gaming support.”
Fancyleds 2.0 HDMI Sync Box with RGB TV Backlight for 70–90-Inch TVs
The Fancyleds 2.0 HDMI Sync Box suits buyers who want a straightforward HDMI-synced backlight for a 70–90-inch TV without needing the newer, higher-bandwidth features of the Fancyleds 3-Port model. It supports 4K at 60Hz, HDR, and Dolby Vision, and its HDMI 2.0b connection is a fit for many streaming devices and consoles. The included RGB strip, cable, adapter, and corner brackets make it a self-contained kit, unlike the Philips Hue Sync Box, which relies on separate Hue lights for room lighting. The compromise is clear: HDMI 2.0b does not provide the 4K 120Hz passthrough available from the Fancyleds 3-Port or Linkind HDMI 2.1 options. It also needs an external source, cannot sync TV apps, and PC use is not recommended. I’d pick it for large-screen 60Hz viewing, not newer high-refresh gaming.
Pros:- Supports 4K at 60Hz with HDR and Dolby Vision.
- Includes an RGB LED strip, HDMI cable, universal power adapter, and corner brackets.
- Designed to respond to colors from the HDMI signal without a camera.
- CEC support and app control are included.
Cons:- HDMI 2.0b limits passthrough compared with the Fancyleds 3-Port and Linkind HDMI 2.1 models.
- Built-in smart TV apps do not sync.
- PC use is not recommended.
Best for: Owners of 70–90-inch TVs who use external HDMI streamers or consoles and want a bundled 4K/60 backlight kit.
Not ideal for: High-refresh-rate console gamers, PC users, or viewers who depend on built-in smart TV apps.
- Model:FSB1P2.0
- Connectivity:HDMI 2.0b
- Video support:4K at 60Hz with HDR and Dolby Vision
- TV size compatibility:70–90 inches
- Special features:CEC enabled; app control
- Compatible devices:Television, smartphone, computer, laptop, tablet, gaming console, streaming device
- Included components:Sync box, RGB LED strip, HDMI cable, universal power adapter, corner brackets
- Warranty:2 years
Our verdict“Choose this for a large TV and external 4K/60 sources if you do not need HDMI 2.1 gaming passthrough.”
Linkind HDMI 2.1 Sync Box with TV Backlight
The Linkind HDMI 2.1 Sync Box is the most versatile pick here for buyers who want lighting sync without giving up newer video formats. It passes up to 8K at 60Hz or 4K at 120Hz and lists Dolby Vision, HDR10+, VRR, and ALLM support, making it a stronger match for current consoles than the 4K/60 Fancyleds 2.0 or Philips Hue boxes. Its 20-foot trimmable backlight is sized for TVs up to 90 inches, while customizable zones, game and music modes, and app or voice control add flexibility beyond basic color matching. The price of that breadth is a need to route video through an external HDMI source: built-in TV apps are not supported. It also may be more capability than a 60Hz streamer setup needs. I’d put it first for mixed gaming and video use, but not for app-only viewing.
Pros:- Supports up to 8K at 60Hz and 4K at 120Hz over HDMI 2.1 passthrough.
- Lists Dolby Vision, HDR10+, VRR, and ALLM support.
- 20-foot trimmable backlight is designed for TVs up to 90 inches.
- Offers customizable sync zones, game and music modes, and app or voice control.
Cons:- Does not sync content from built-in smart TV apps.
- Requires an external HDMI source.
Best for: Console gamers and home-entertainment users with TVs up to 90 inches who want 4K at 120Hz passthrough and configurable lighting modes.
Not ideal for: Viewers who rely on built-in TV apps or have no external HDMI sources to connect.
- HDMI support:HDMI 2.1 passthrough
- Maximum resolution and refresh rate:8K at 60Hz; 4K at 120Hz
- HDR formats:HDR10+, Dolby Vision
- Gaming features:VRR, ALLM, dedicated Game Sync modes
- Backlight:20 ft (6 m), trimmable multicolor LED
- Compatible TV size:Up to 90 inches
- Control:App and voice control
- Smart device expansion:Up to 30 compatible Linkind devices
- Ingress protection:IP65
Our verdict“Choose Linkind if you want high-refresh HDMI 2.1 passthrough and flexible lighting modes for an external-source setup.”
Philips Smart Lighting HDMI Sync Box with RGBIC TV Backlight, for 55–65-Inch TVs
This Philips kit is a strong fit for a 55–65-inch TV and an existing WiZ setup: its RGBIC backlight follows video from an external HDMI source, with support for 4K at 60Hz, HDR10+, and Dolby Vision. The WiZ app offers sync modes and adjustments for light intensity and saturation, while the built-in microphone adds music-reactive effects. Compared with the LightingWill kit, this option gives buyers Dolby Vision support and a clear path to expanding effects with compatible Connected by WiZ lights; LightingWill, in turn, has two HDMI inputs and higher stated brightness. The main limitation is source access: smart TV apps do not sync, and multiple HDMI devices require a separate switcher. It also does not work with Philips Hue products, despite the Philips name.
Pros:- Supports 4K at 60Hz, HDR10+, and Dolby Vision for compatible HDMI sources.
- WiZ app adjusts sync modes, saturation, and light intensity.
- Built-in microphone enables music-reactive lighting.
- Works with compatible Connected by WiZ lights and Alexa or Google Home.
Cons:- Cannot sync content from built-in smart TV apps.
- A separate HDMI switcher is needed for multiple source devices.
- Not compatible with Philips Hue products.
Best for: Owners of 55–65-inch TVs who use HDMI-connected players or consoles and want to extend lighting effects through Connected by WiZ lights.
Not ideal for: Viewers who mostly use built-in TV apps, need multiple HDMI connections without buying a switcher, or already rely on Philips Hue lights.
- TV size:55–65 inches
- Video input:HDMI 2.0 external source
- Video support:4K at 60Hz, HDR10+, Dolby Vision
- Lighting:Multicolor RGBIC LED strip
- Brightness:120 lumens
- Connectivity:Wi-Fi
- Control:WiZ app, Amazon Alexa, Google Home
- Power:17 W, 120 V, corded electric
Our verdict“Choose this kit for a 55–65-inch TV if you want Dolby Vision syncing and WiZ-compatible lighting expansion, and your video comes through HDMI devices.”
LightingWill HDMI 2.0 Sync Box TV Backlight Kit for 50–65 Inch TVs
For a 50–65-inch TV with more than one HDMI device, the LightingWill kit has a practical advantage: two HDMI inputs let you connect sources through the box rather than adding a separate switcher. Its 9.8-foot RGBIC strip supports 4K HDR at 60Hz, and 72 LEDs per meter are intended to produce smoother multicolor effects. App, button, sync-box, Alexa, and Google Assistant controls give households several ways to adjust the lighting. Against the Philips Smart Lighting kit, LightingWill offers more built-in HDMI connections and a stated brightness of up to 1000 lumens, while Philips lists Dolby Vision support and integration with Connected by WiZ lights. Here, the tradeoff is that built-in TV apps still cannot sync, and the strip is not water resistant. It suits a straightforward HDMI setup, not viewers seeking app-based TV syncing.
Pros:- Two HDMI inputs accommodate multiple connected devices.
- Supports 4K HDR at 60Hz with low-latency synchronization.
- RGBIC strip has 72 LEDs per meter and supports 16 million colors.
- Offers app, button, sync-box, Alexa, and Google Assistant controls.
Cons:- Cannot synchronize video from built-in smart TV apps.
- Does not support Dolby Vision according to the supplied product data.
- The LED strip is not water resistant.
Best for: TV owners with a 50–65-inch screen and two HDMI devices who want app, physical-button, or voice control without a separate HDMI switcher.
Not ideal for: Viewers who rely on smart TV apps for most content, need Dolby Vision specifically, or want lighting hardware suitable for damp areas.
- TV size:50–65 inches
- LED strip length:9.8 feet
- LED density:72 LEDs per meter
- HDMI connections:2 inputs, 1 output
- Video support:4K HDR at 60Hz
- Lighting:RGBIC, 16 million colors
- Brightness:Up to 1000 lumens
- Controls:App, button, sync box, Alexa, Google Assistant
- Warranty:1 year
Our verdict“Pick LightingWill if you want two HDMI inputs and several control options for a 50–65-inch TV, and can accept its external-source-only syncing.”
Philips Hue Play HDMI Sync Box
The Hue Play Sync Box makes the most sense for buyers who already have a Hue Bridge and color Hue lights and want to coordinate those lights with HDMI video, music, and games. Its four HDMI inputs are the standout practical difference: compared with the Philips Smart Lighting WiZ kit, it can accommodate more connected sources without the separate switcher that the WiZ product may require. The Hue app lets users adjust brightness, speed, and intensity, and the compact box can sit on a TV cabinet or shelf. This is not a complete lighting kit, though: the Bridge and Hue lights are required, and the box works only with Hue lights. Buyers starting from scratch may find the all-in-one LightingWill kit simpler, while viewers who use TV apps will still need an HDMI-connected source for synchronization.
Pros:- Four HDMI inputs connect multiple video sources.
- Synchronizes compatible Hue color lights with movies, music, and games.
- Hue app adjusts lighting brightness, speed, and intensity.
- Compact design fits on a shelf or TV cabinet.
Cons:- Requires a Philips Hue Bridge and compatible Hue lights, which are not included.
- Works only with Hue lights.
- The supplied product data does not specify video resolution or HDR support.
Best for: Philips Hue households that already own a Hue Bridge and compatible color lights, and want to connect several HDMI sources.
Not ideal for: Buyers seeking a complete backlight kit, people without Hue equipment, or viewers who want synchronization from built-in smart TV apps.
- HDMI inputs:4
- Compatible device:Television
- Connector:HDMI
- Required equipment:Philips Hue Bridge and Hue lights
- Lighting control:Hue app: brightness, speed, and intensity
- Included:Sync box, power adapter, HDMI cable
- Color:Black
- Power input:240 V AC
Our verdict“Choose this sync box if you already own Hue lights and a Bridge and want four HDMI inputs; skip it if you need a self-contained backlight kit.”
How We Picked
I ranked these options around the job an HDMI sync box needs to do: receive video from external sources, pass it through to the TV, and coordinate compatible backlighting. I gave priority to clearly identified HDMI 2.1 support, practical TV-size ranges, included lighting, and useful connection details such as a stated three-port design. I also separated standalone Hue ecosystem hardware from bundled strip kits, since they solve different needs rather than competing on identical terms.
The ranking favors products that appear to offer a clear fit for more buyers, not simply the longest feature list. A newer HDMI standard can matter for high-bandwidth sources, but it does not compensate for an ill-fitting strip or a lighting setup that adds unwanted complexity. Where model names or listings do not specify details such as supported video formats, source count, or ecosystem requirements, I treat that as a point for buyers to verify rather than assume. The resulting order reflects format fit, TV coverage, setup value, and role in the lineup; it is not a claim of hands-on testing.
Factors to Consider When Choosing Best HDMI Sync Boxes
Before choosing a box, match it to the whole path from source to screen—not just the TV. The following checks help avoid common compatibility and setup mistakes that product names alone can hide.
Match HDMI support to every source in your setup
Start with the sources you actually plan to connect, such as a console, streaming device, or disc player, and check their required video features. A box labeled HDMI 2.1 may be the better candidate for newer high-bandwidth equipment, while an HDMI 2.0 model can suit a less demanding setup. The box sits between source and TV, so its capabilities can affect the signal path even when the television supports the format. Verify support for the resolution, refresh rate, HDR formats, and gaming features you use; a version label alone does not confirm every feature. Also check how many HDMI inputs are available, since a three-port model may reduce the need to swap cables. If a listing leaves these details unclear, confirm them before buying rather than assuming compatibility.
Treat TV-size ranges as a fit guide, not a measurement
Published screen ranges help narrow choices, but the shape and dimensions of your TV matter too. A kit intended for a 55–65-inch screen may not reach the edges of a wide or unusually shaped set, and a longer strip can require careful placement on a smaller television. Measure the rear perimeter where the lights will sit, including space around stands, vents, and wall mounts. Compare that measurement with the strip length and the maker’s placement instructions. Do not buy by diagonal size alone, especially for large TVs or a kit described as cuttable. Check whether cutting is supported and where the strip can be trimmed without damaging the circuit.
Choose a bundled kit or a standalone lighting hub
Bundled sync kits pair the box with a strip designed for a stated TV size, which can simplify selecting compatible lighting. A standalone box, such as a Hue-focused model, may suit a room that already has compatible lights and a preference for expanding an existing system. These are different ownership paths: a bundled kit is not automatically the best fit if you already own lights, and a hub is not a complete backlight solution on its own. Check which components are included, what else must be purchased, and whether the lighting works with the controller or ecosystem you already use. Map the complete setup before comparing features, including any bridge, app, or extra lights the product listing requires.
Check the source-to-TV connection path before installing
An HDMI sync box generally processes video from connected external devices, so it may not capture content from apps running directly on a smart TV. If most of your viewing comes from built-in apps, confirm the box’s stated compatibility and consider whether an external streaming device would be part of your setup. Soundbars, AV receivers, and game systems can also change where the box needs to sit in the HDMI chain. Draw a quick connection plan before buying, noting which device connects to which input and where audio is routed. Connection order can affect format support, so check the manuals for the box, TV, and other HDMI equipment when using advanced audio or video features.
Balance lighting effects against setup and room needs
More lighting zones or color effects can create a more detailed response, but they can also bring extra setup steps and app controls. Think about whether you want a simple bias light behind the screen or coordinated lighting across a larger room. A bright room may make subtle effects less visible, while reflective walls can change how colors appear around the TV. Consider cable routing, available outlets, and whether the strip can be mounted cleanly without covering vents or ports. Prioritize the effect you will notice most rather than treating a longer feature list as a guarantee of a better fit.
Pay more only for capabilities your setup can use
A premium ecosystem box can make sense when it connects to lights you already own or supports a room-wide arrangement you want to build. If you only need a single strip behind one TV, a bundled kit may provide a more direct route with fewer separate components. On the other hand, choosing an older HDMI standard to avoid extra features can create a bottleneck if you later add a newer console or display. Compare the cost of the full setup, including any additional lights or bridge, rather than the box alone. Buy for your current devices and likely next upgrade, but do not pay for ecosystem features that will remain unused.
Frequently Asked Questions
Will an HDMI sync box work with apps built into my smart TV?
Many HDMI sync boxes analyze video entering through their HDMI inputs, so built-in TV apps may not pass through the box. Check the product’s supported sources and connection diagrams before choosing it for app-based viewing. An external streaming device connected to the box may provide a workable route, but the result depends on the box and the apps or formats involved. If you mainly watch built-in apps, do not assume the lighting will sync just because the TV has HDMI ports. Confirm this specific use case in the product documentation.
Should I choose an HDMI 2.1 sync box if my TV and console support HDMI 2.1?
It is a sensible starting point when you want the box to sit in a high-bandwidth gaming signal path, but the label does not confirm every feature you need. Check the box’s stated resolution, refresh-rate, HDR, and gaming-feature support alongside the TV and console specifications. Any receiver or soundbar in the chain can also affect compatibility. If your current sources do not use those features, an HDMI 2.0 model may be adequate, though it may be less suitable for a later upgrade. Choose based on the weakest link in the full chain, not on one device’s specification.
Can I use a sync box with a soundbar or AV receiver?
Often the box can be placed before or after other HDMI equipment, but the correct order depends on your devices and the video and audio formats you need. Review the manuals for the TV, sync box, and receiver or soundbar, then map the source-to-display path before installation. Check that the chosen arrangement passes through the formats used by your sources. If the audio device has several HDMI inputs, it may be part of the switching path rather than a simple endpoint. When documentation is unclear, confirm the exact arrangement with the manufacturer before buying.
How do I choose the right backlight strip length for my TV?
Measure the rear edge where you plan to mount the strip instead of relying only on the TV’s diagonal size. Account for the strip’s stated length, corner layout, and any gap needed for ports, vents, or a wall mount. A kit’s listed TV-size range is a useful filter, not a promise that every chassis shape will be covered edge to edge. If a strip is described as cuttable, check the cutting instructions and permitted points before trimming it. This check is especially useful for very large screens and sets with unusual proportions.
Is a Philips Hue sync box a better choice than a kit with a backlight included?
It depends on whether you already own compatible Hue lights and want the sync box to coordinate a broader lighting setup. A standalone Hue box may fit that existing system, but buyers should confirm what extra hardware and lights their setup requires. A bundled kit is a more direct option when the main goal is adding a strip behind one TV. Compare the full list of included components and any ecosystem requirements rather than treating the box and kit as equivalent packages. For this lineup, the Hue Play boxes serve ecosystem-focused buyers, while bundled options make the backlight part of the purchase.
Conclusion
For most buyers seeking a bundled, newer-standard setup, I’d start with the Govee HDMI 2.1 AI Sync Box 2 as the best overall pick, provided its 55–65-inch range fits the TV. The Linkind HDMI 2.0 TV Backlight Kit is my value-oriented choice for a compatible large screen and a less demanding HDMI chain. For a premium lighting ecosystem, choose the Philips Hue Play HDMI Sync Box 4K if you already use Hue and have confirmed the rest of the setup you need. Beginners who want a box and strip together can start with a size-matched kit such as the LightingWill HDMI 2.0 option, after checking source compatibility. For specific needs, Fancyleds offers distinct small-screen, large-screen, and three-port choices; compare each model’s standard and fit rather than buying by brand alone.
