
TCL 55S21 Smart Ultra 55" LED 4K HDR HD Roku TV
Where to buy
No store is showing a current price right now. The stores below sell it; ask the agent to check today's prices.
Prices differ by screen size, and this one may be for a smaller size: check the size at the store.
Prices are checked against each store and labelled with when.
Ask our agent about this product
It checks today's price at every store, compares the alternatives and answers in about a minute.
In stock now from TCL
Our take on the TCL 55S21 Smart Ultra 55" LED 4K HDR HD Roku TV
The TCL 55S21 is a 55-inch 4K LED TV running the Roku smart platform, with HDR support and built-in voice control. It covers the basics well: three HDMI inputs, a TOSLINK optical output and USB for streaming sticks or drives. It suits budget-minded buyers who want a big screen with a familiar, app-rich interface rather than premium picture processing. Against rivals like the Hisense A4 series and Amazon Fire TV sets, it trades some brightness and contrast for Roku's cleaner, faster interface and simple setup.
- Roku smart platform with a large app selection
- 4K resolution with HDR support
- Voice control built in
- Three HDMI inputs plus optical audio out
- Simple setup and navigation
What reviewers say
Owners of TCL's entry Roku sets generally like the easy Roku interface, the range of apps and the value for a 55-inch 4K screen. Complaints center on picture quality in bright rooms and on sound from the built-in speakers.
- InterfacePraisedOwners find the Roku home screen quick and easy to navigate.
- App selectionPraisedReviewers like having the major streaming apps built in.
- Picture qualityMixedFine for everyday viewing, but brightness and contrast fall short of pricier sets.
Questions and answers
- Is this a good TV for a bright living room?
- It is an entry-level LED panel without local dimming, so it struggles in very bright rooms. It fits better in bedrooms or dimmer spaces.
- Does it support HDR?
- Yes, it accepts HDR content, though the panel's limited brightness means the effect is modest.
- What ports does it have?
- It has three HDMI inputs, a TOSLINK optical audio output and USB ports.
- Is it good for gaming?
- It is a 60Hz panel aimed at casual viewing, so it suits console play but not competitive gaming.
- Do I need a soundbar?
- Many owners add one. The built-in speakers are basic and thin on bass.
- How does it compare with the Hisense A4 series?
- Both are budget 4K sets. The TCL leans on Roku's interface; the Hisense runs its own system. Picture performance is close.




















