Description
What the TCL 55S455 is
The 55S455 is a 55 inch class television from TCL’s 4-Series, the company’s entry level 4K line. The panel is an LED backlit LCD. There is no quantum dot layer, no Mini-LED backlight and no local dimming claim anywhere in the listing, so this should not be confused with TCL’s QLED models.
Native resolution is 4K Ultra HD, which the listing describes as four times the resolution of Full HD. TCL also names 4K Upscaling, which processes HD sources toward the panel’s native resolution. Upscaling improves how older content looks by interpolating detail; it does not recover detail that was never recorded.
Published figures are a weight of 22 pounds, panel dimensions of 3.2 by 48.3 by 28 inches, a 16:9 aspect ratio, 1.07 billion display colors and audio output of 10 watts per channel. Wireless is 802.11ac 2×2 dual band across 2.4 and 5 GHz.
Roku TV as the platform
The defining feature of this set is not the panel, it is the operating system. Roku TV is built in, which means the streaming platform is the television’s home screen rather than something added on an HDMI port.
Roku’s approach is worth understanding because it differs from Google TV and from manufacturer platforms. Every input, every app and every connected device appears as a tile on one customizable home screen, so a games console is a tile alongside Netflix rather than something reached by cycling through HDMI inputs. TCL makes exactly that point in its own copy, and for households where several people use the television it removes a genuine source of friction.
The remote is deliberately simplified, with roughly half the buttons of a conventional television remote and one touch shortcuts to popular services. TCL lists more than 250 free live channels through the Roku Channel alongside Roku Originals and paid apps.
The same caution applies here as to any smart platform: app availability and platform support are decided by the service providers and by Roku rather than by TCL, and they change over the life of a television. The advantage of a built in platform is convenience; the disadvantage is that it cannot be replaced without replacing the screen.
The near identical TCL 55S446 is the same 4-Series size running Google TV instead, and for most buyers the choice between the two is a choice of operating system rather than of picture quality.
What the listing does not say
Several specifications that matter are missing, and they should not be guessed at.
No refresh rate is published, and no motion rate marketing figure appears either. Buyers who need high frame rate gaming should confirm the panel specification before ordering.
HDR is named but not qualified. The listing says high dynamic range delivers bright and accurate colors, and never states whether that means HDR10, HLG, Dolby Vision or some combination. Those are meaningfully different, and a set that accepts one is not necessarily compatible with the others.
The product name lists the connection types, Wi-Fi, RF, USB, Ethernet and HDMI, but gives no counts. HDMI port count is the number most people need, since a soundbar, a console and a streaming stick will use three between them. There is also no eARC statement, no peak brightness figure, no contrast ratio and no local dimming information.
One attribute is misleading: the wattage field reads 10 watts, which is the per channel audio output rather than the television’s power consumption.
Where an entry 4-Series sits
It is worth setting expectations for what a 4-Series is. This is TCL’s opening 4K tier, below the 5-Series and the QLED ranges, and the specification reflects that: an ordinary LED backlight with no zone control, no quantum dot layer and modest audio. What buyers get for the money is resolution, a good platform and a screen size that would have cost several times as much a decade ago.
That combination is exactly right for a great many households. A set used for streaming, broadcast television and casual gaming in a room with daylight in it is not being held back by the absence of local dimming. The buyers who should look further up the range are those watching films in a dark room, where black level is the whole point, and those gaming on hardware that can push high frame rates.
Highlights
- 55 inch class LED backlit LCD with native 4K resolution.
- 4K Upscaling for HD sources.
- Roku TV built in, with every input and app on one customizable home screen.
- Simplified Roku remote with one touch service shortcuts.
- More than 250 free live channels through the Roku Channel.
- Wi-Fi, Ethernet, USB, HDMI and an RF tuner for over the air broadcast.
- 10 watt plus 10 watt stereo audio.
- Light at 22 pounds for a 55 inch set.
Things To Consider
- No refresh rate is published anywhere in the listing.
- HDR is claimed without naming the supported formats.
- No HDMI port count, no HDMI version and no eARC statement.
- No brightness, contrast or local dimming information, so HDR performance cannot be judged.
- The wattage field of 10 watts is the audio output, not power consumption.
- No VESA mounting pattern or stand width is published.
- Twenty watts of total audio is modest and most rooms will want a soundbar.
- A built in platform cannot be replaced. If Roku support changes, the television changes with it.
Who it suits
This is a straightforward main television for a household that streams, watches over the air broadcast, and wants the simplest possible interface. Roku TV is the easiest platform to hand to someone who does not want to learn a menu system, and having the RF tuner alongside it makes this a genuine option for cord cutters.
It is not a set for a gamer or for a dedicated viewing room, since neither the refresh rate nor the HDR capability is documented. Buyers who want the same panel with Google TV should read the 55S446, and those comparing across the range should look at the TCL 55S421 and the Hisense 55A6HX in the LED and LCD TVs category. Smaller rooms are covered by the TCL 32S327.
