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TCL 55″ 4K HDR Dolby Vision Roku Smart LED TV

Last updated: January 16, 2024


The TCL 55" 4K HDR Dolby Vision Roku Smart LED TV offers an impressive picture for an affordable price. You'll get one of the best HDR pictures in its class and a low input lag that makes it perfect for gaming. Contrast Control Zones also optimizes every section of the screen to keep the brightest brights and darkest darks as true to life as possible.

TCL 55″ 4K HDR Dolby Vision Roku Smart LED TV
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We looked at the top Smart TVs and dug through the reviews from some of the most popular review sites. Through this analysis, we've determined the best Smart TV you should buy.

TCL 55R617 - 55-Inch 4K Ultra HD Roku Smart LED TV (2018 Model)

TCL 55R617 - 55-Inch 4K Ultra HD Roku Smart LED TV (2018 Model)
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$650.00

Product Details

Key Takeaway: With minimal lag time, this budget-friendly TCL 55" 4K HDR Dolby Vision Roku Smart LED TV is ideal for gamers.

In our analysis of 98 expert reviews, the TCL 55" 4K HDR Dolby Vision Roku Smart LED TV placed 18th when we looked at the top 26 products in the category. For the full ranking, see below.

From The Manufacturer

TCL’s 6-Series combines stunning 4K HDR picture performance and the award-winning Roku TV smart platform in a bold, brushed metal design for a superior TV experience. Dolby Vision delivers greater brightness and contrast, as well as a fuller palette of rich colors. TCL’s Contrast Control Zone technology individually optimizes the image across up to 120 zones to yield striking contrast between light and dark areas. The 6-Series models’ iPQ Engine provides precise color replication while HDR Pro Gamma significantly improves HDR performance in any setting. Powerful picture performance is complemented by the Roku OS, providing seamless access your cable box, Blu-ray player, gaming console, and other devices without flipping through inputs or complicated menus. An enhanced remote makes it easy to find movie titles, launch or change channels, and even switch inputs, all with your voice.

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Expert Reviews


What reviewers liked

Very easy set up thanks to Roku software. Screen offers sharp, detailed quality and deep contrast. Plenty of hook up options including three HDMI ports, Ethernet, and USB.
- BestReviews
The obvious advantage TCL has here is its full array panel and several dozen contrast control zones - they help each scene obtain higher contrast and even help SDR content look its best.
- Tech Radar
It has excellent black levels, high brightness, and punchy HDR picture
- Digital Trends
Input lag is the amount of time it takes for a display to update after receiving a signal, and this is one of the few areas in which the 55R617 scores well. The HDTV showed an input lag of 18.4ms is almost half of most screens we test, though it has very high input lag in its Movie picture mode.
- PCVerge
The Roku operating system is very easy to use.
- TechHive
The excellent Roku streaming service and menu is built-in to the TV. Overall it’s easy to navigate, has a bunch of 4K HDR options via an app, and the UI is responsive and customizable.
- IGN
The contrast and color is excellent.
- PC Magazine
Roku remote and interface are easy to use.
- Cord Cutters
HDR performance is very effective.
- Consumer Reports
The 6-Series 55-inch TCL Roku television is great looking. Right out of the box, I really like the slim bezels and the feet.
- Hipster Pixel
The new design is so much better than last year’s plain black plastic, with the slimmer bezels and stealth metal design. It truly looks like it belongs in a modern living room, and stands toe to toe with other major brands in this department.
- Display Lag
The TCL remote app performed the task of a distant remote and cast the TV’s audio to my smartphone.
- Help To Choose

What reviewers didn't like

Difficult to view at any angle beyond 45 degrees. Top and bottom of screen is a bit dark.
- BestReviews
Where there’s room for improvement here is with how the TV handles motion. For the most part, it’s surprisingly good - even if you’re watching fast-paced content - but the way Roku TV is implemented here, you don’t have much control over how motion is handled. There are just three settings - high, medium, low - or it can be turned off entirely.
- Tech Radar
Vertical banding is visible in some units.
- Digital Trends
No headphone in remote jack.
- PCVerge
The other issues were related to control of the 96-zone full-array backlight, with the brightness of the entire screen occasionally jumping up and down by a noticeable amount.
- TechHive
All that said, there is a drawback with the TCL 55R617 and it's viewing angles. Sitting even a little off axis starts to affect color and contrast.
- IGN
Power hog. Only three HDMI ports. No headphone jack in remote.
- PC Magazine
The panel is good, but not great.
- Cord Cutters
Needs separate Roku app to optimize picture.
- Consumer Reports
The only connector lacking is the number of HDMI ports. The 6-Series only has 3 and I would love to have 4 or 5.
- Hipster Pixel
Motion blur. While TCL did add a mode called LED Motion Clarity, which adds black frame insertion during content, this option drastically reduces your peak backlight brightness, and causes a noticeable flicker that is quite distracting.
- Display Lag
There appeared some clouding around the moving objects on the screen.
- Help To Choose

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