We should take a look at TCL 55S517 and 55S425 if we are looking for affordable 4K UHD TV that already support HDR. Both of those two TVs are introduced by TCL, TCL 55S517 was released as part of TCL’s 2018 TV lineup, while TCL 55S425 is widely available in 2019. TCL 55S517 is usually offered at the higher price than TCL 55S425 that also means It’s positioned higher. What are the reasons to choose TCL 55S517? To answer that question, it’s a good idea to talk about their key differences in this article.
TCL 55S517 Review

TCL 55S517 comes as one of the screen size option of TCL S517. It comes with 4K UHD Resolution that completed with 4K Upscaling to help you bring brilliant picture not only from original 4K content sources but also from non 4K contents that upscaled into near 4K picture quality. TCL 55S517 comes with TCL’s NBP Photon Technology and IPQ Engine as its color technology. NBP Photon Technology can deliver more vivid color, while IPQ Engine is able to reproduce more accurate color. We can also find that TCL 55S517 is also completed with HDR Dynamic Contrast and HDR Pro Gamma. HDR Dynamic Contrast can bring better contrast vibrancy between the dark and bright part of the screen, while HDR Pro Gamma allows to enjoy excellent details in any light conditions. TCL 55S517 support HDR10 and Dolby Vision so that we can enjoy enhanced details and expanded contrast from our favorite HDR10 and Dolby Vision content sources. TCL 55S517 comes with 120Hz CMI (Clear Motion Index) that can deliver smooth motion images from our favorite action movies and sports while It also allows us to experience minimum lagging gaming experience when use this TV as our gaming monitor. The color, clarity and contrast of the picture delivered on this TV is optimized by dual-core GPU/CPU that integrated with this TV. The smart TV platform of TCL 55S517 is Roku TV that allows us to enjoy wide range of entertainment from large collection of premium content providers. Roku TV is also completed with 802.11ac dual band wireless that provides fast and stable internet connection. The remote control of TCL 55S517 is RC580 that completed with Voice control to help you control this TV conveniently. Additionally we can also control this TV easily with Google Assistant and Amazon Alexa since they are already supported. The speaker system of TCL 55S517 is quite basic with 2Ch 16W speaker system. Although it’s only basic speaker system, but we can still hear good sound quality since it’s powered by Dolby Digital. If you have higher audio expectation, then I’m sure that you need to attach your favorite soundbar to get more powerful surround sound from this TV. You can check today’s offer of TCL 55S517 on Ebay here…
TCL 55S425 Review

TCL 55S425 is one of the most affordable 55-Inch 4K UHD TV that support HDR. It’s introduced as part of TCL S425. TCL 55S425 comes with 4K UHD Resolution that completed with 4K Creative Pro Upscaling Engine that allows us to enjoy good picture quality not only from original 4K content sources but also from non 4K contents that upscaled into near 4K picture quality. TCL 55S425 support HDR10 so that we can enjoy enhanced details and expanded contrast from our favorite HDR10 content sources. TCL 55S425 comes with 120Hz CMI as its refresh rate technology so that we can enjoy fluid motion images from our favorite action movies and sports. 120HZ CMI is also able to bring minimum input lag when we use this TV as our gaming monitor. TCL 55S425 comes with Dual-Core GPU/CPU that can optimize the color, clarity and contrast of the picture delivered on this TV. TCL 55S425 comes with Roku TV as its Smart TV platform. Roku TV is able to bring premium entertainment from your favorite content providers with fast internet connection from 802.11ac dual band wireless. TCL 55S425 only comes with RC280 standard remote but it’s already compatible with Google Assistant and Amazon Alexa to help you control this TV conveniently. We can find 2Ch 16W speaker system integrated with this TV as its speaker system. It’s indeed a basic speaker system but it still can deliver good sound quality with Dolby Digital integrated with it. Attaching your favorite soundbar is a good idea if you are looking for more powerful surround sound. You can check today’s offer of TCL 55S425 on Ebay here…
Similarities & Differences Table
The similarities & differences table below shows us the key specs and features of TCL 55S517 and 55S425. We need to know their specs and features before we can talk more about their key differences.
TCL 55S517 |
TCL 55S425 | |
Similarities | ||
Screen Size | 55-inch | 55-inch |
Display Technology | LED | LED |
Resolution | 4K UHD | 4K UHD |
4K Upscaling | YES | YES |
Motion Technology | 120Hz CMI | 120Hz CMI |
Processor | Dual-Core GPU/CPU | Dual-Core GPU/CPU |
Smart TV Platform | Roku TV | Roku TV |
Google Assistant and Amazon Alexa compatible | YES | YES |
Speaker System | 2Ch 16W | 2Ch 16W |
Built-in Wifi | 802.11ac Dual Band | 802.11ac Dual Band |
HDMI/USB | 3/1 | 3/1 |
Differences | ||
Introduced | 2018 | 2019 |
TCL’s NBP Photon Technology | YES | NO |
IPQ Engine | YES | NO |
HDR Dynamic Contrast | YES | NO |
HDR Pro Gamma | YES | NO |
HDR Support | HDR10 and Dolby Vision | HDR10 |
Remote Control | RC580 | RC280 |
Price | Higher | Lower |
The Key Differences of TCL 55S517 and 55S425
After we look at the table above, we can find that there are few differences between TCL 55S517 and 55S425. The first key difference of TCL 55S517 and 55S425 comes from TCL’s NBP Photon Technology, IPQ Engine, HDR Dynamic Contrast and HDR Pro Gamma that we can find in TCL 55S517. TCL’s NBP Photon Technology is able to deliver wide color gamut for more vivid color details while IPQ Engine is able to reproduce more accurate color details. HDR Dynamic Contrast can bring more vibrant contrast that combined with HDR Pro Gamma that can make the details remain visible whether you are watching in dark or bright environment. The second key difference between those two TVs comes from their HDR support. TCL 55S517 supports HDR10 and Dolby Vision, while TCL 55S425 only supports HDR10. With Dolby Vision, you can enjoy enhanced details and expanded contrast from wide range of HDR content sources (Dolby Vision HDR). The third key difference of TCL 55S517 and 55S425 is their remote control. TCL 55S517 comes with RC580 remote, while TCL 55S425 comes with RC280 remote. RC580 remote is more advanced remote control that support voice control while RC 280 is only standard remote that doesn’t come with any voice control support.
When we look at the price of TCL 55S517 and 55S425, we can find that TCL 55S517 is usually offered at the higher price since It’s indeed the model that positioned higher. When you are interested to know their price difference, you need to check their latest price first since TV prices often change over time.
What are the Reasons to Choose TCL 55S517?
From our discussion about TCL 55S517 and 55S425 as well as their key differences, we can find that TCL 55S517 is the model that positioned higher than TCL 55S425. What are the reasons to choose TCL 55S517 as the higher model? We can find that there are 3 reasons to choose TCL 55S517 : 1. Better picture quality (contrast and color), 2. Dolby Vision support, 3. RC580 voice remote. But we can find that TCL 55S517 is usually offered at the higher price than TCL 55S425. So if you don’t mind to spend higher for better contrast and color, Dolby Vision support and RC580 voice remote then TCL 55S517 is the model that you should choose. Where’s recommended place to order one? You should Check Today’s Offer of TCL 55S517 on Ebay here…
TCL 55S425 comes as the more affordable option of TCL 55S517. It indeed doesn’t come with advanced color and contrast technology but It still can deliver good picture quality from both of original 4K content sources and non 4K contents that upscaled with 4K Creative Pro Upscaling Engine. We can also still enjoy enhanced details and contrast from HDR10 content sources. Although TCL 55S517 doesn’t come with RC580 voice remote, we can still control this TV conveniently with powerful mobile app that can be installed in our smartphone and tablet. So if you have more limited budget, you have the reason to choose TCL 55S425. Where should you order one? We recommend you to Check today’s offer of TCL 55S425 on Ebay here…