TCL 4 Series 2019 TV Review

Tested using Methodology v1.6
Updated Nov 11, 2020 at 09:54 am
TCL 4 Series 2019 Picture
6.7
Mixed Usage
Value for price beaten by
: Vizio V5 Series 2021
6.5
Movies
Value for price beaten by
: Vizio V5 Series 2021
6.7
TV Shows
Value for price beaten by
: LG UP7000
6.8
Sports
Value for price beaten by
: Toshiba Fire TV 2020
7.0
Video Games
Value for price beaten by
: Vizio V5 Series 2021
6.1
HDR Movies
Value for price beaten by
: Vizio V5 Series 2021
7.0
HDR Gaming
Value for price beaten by
: Vizio V5 Series 2021
7.5
PC Monitor
Value for price beaten by
: Hisense A6G
This TV was replaced by the TCL 4 Series 2020
Type LED
Sub-Type
VA
Resolution 4k

The TCL 4 Series 2019 is an alright overall budget TV with built-in Roku TV. It delivers decent picture quality and displays deep blacks thanks to its VA panel's outstanding contrast ratio. Although it has decent reflection handling, it doesn't get very bright and isn't suitable for a well-lit room. It lacks a wide color gamut, and due to its low HDR peak brightness, it can't deliver HDR content with vivid colors and bright highlights. The response time is fast and it displays fast-moving content with very little blur trail. It offers a responsive gaming performance thanks to the low input lag, but unfortunately, it lacks advanced gaming features like FreeSync.

Our Verdict

6.7 Mixed Usage

The TCL S425 is an alright TV for mixed usage. It has decent picture quality but can't get very bright, so it's more suitable for dim rooms. It has decent motion handling and a fast response time that leaves only a small blur trail behind fast-moving objects. It has a very low input lag, and it's very responsive, making it suitable for gaming or use as a PC monitor.

Pros
  • Outstanding native contrast ratio.
  • Decent reflection handling.
  • Great response time.
Cons
  • No local dimming.
  • Doesn't get bright.
  • Fails to display wide color gamut.
6.5 Movies

The TCL S425 is an okay TV for watching movies. It delivers deep blacks in a dark room thanks to its high contrast ratio but lacks a local dimming feature, and black uniformity is just decent. There's no motion interpolation feature and unfortunately, the TV can only remove judder from native 24p sources. On the upside, it upscales 1080p content, like from Blu-rays, with no artifacts.

Pros
  • Outstanding native contrast ratio.
  • Decent black uniformity.
Cons
  • No local dimming.
  • Can only remove judder from native 24p sources.
6.7 TV Shows

The TCL S425 is an alright TV for watching TV shows. It's more suitable for an average-lit room as it can't get very bright, but it can handle reflections fairly well so a few more lights won't be an issue. Unfortunately, it has narrow viewing angles so you have to sit in front to get an accurate image. The Roku TV smart interface gives you access to a large number of streaming channels.

Pros
  • Decent reflection handling.
  • Upscales lower-resolution content well.
Cons
  • Doesn't get bright.
  • Narrow viewing angles.
6.8 Sports

The TCL S425 is okay for watching sports. It has a great response time, so fast-moving content has minimal blur trail. Unfortunately, it doesn't get bright, but it has decent reflection handling. Also, it has poor viewing angles, which isn't ideal if you want to watch the big game with a group of friends. There's also visible dirty screen effect in the center, which is distracting during sports.

Pros
  • Decent reflection handling.
  • Upscales lower-resolution content well.
  • Great response time.
Cons
  • Doesn't get bright.
  • Narrow viewing angles.
  • Visible dirty screen effect.
7.0 Video Games

The TCL S425 is a good TV for playing video games. The input lag is very low and you should enjoy a responsive gaming experience, while the response time is fast and delivers crisp motion. Unfortunately, there's no support for any advanced gaming features like FreeSync that more serious gamers are usually looking for, but there's an Auto Low Latency Mode that's great for casual gaming.

Pros
  • Outstanding native contrast ratio.
  • Great response time.
  • Low input lag.
Cons
  • No VRR support.
  • No BFI feature.
6.1 HDR Movies

The TCL S425 is mediocre for watching HDR movies. It delivers deep and fairly uniform blacks in a dark room where HDR is meant to be watched, but there's no local dimming support to improve performance. When in HDR, the peak brightness is low and since the TV can't display a wide color gamut either, HDR content doesn't display the vivid colors and the bright highlights it's supposed to.

Pros
  • Outstanding native contrast ratio.
  • Decent black uniformity.
Cons
  • No local dimming.
  • Doesn't get bright.
  • Fails to display wide color gamut.
7.0 HDR Gaming

The TCL S425 is decent for HDR gaming. This is mainly due to the very low input lag that makes it very responsive, and the fast response time that leaves only a small blur trail behind fast-moving content. The HDR performance of this TV isn't very good as it can't get very bright and it doesn't have a wide color gamut, so it lacks the means to deliver a great HDR picture.

Pros
  • Outstanding native contrast ratio.
  • Great response time.
  • Low input lag.
Cons
  • Doesn't get bright.
  • No VRR support.
  • Fails to display wide color gamut.
7.5 PC Monitor

The TCL S425 is a decent TV for use as a PC monitor. It has a very low input lag, and it responds immediately to your actions. It has no risk of permanent burn-in and the response time is fast and leaves only a small blur trail behind a fast-moving object. Unfortunately, the viewing angles are poor, and there are some uniformity issues on the sides of the screen.

Pros
  • Decent reflection handling.
  • Low input lag.
  • Displays chroma 4:4:4.
Cons
  • Doesn't get bright.
  • Narrow viewing angles.
  • Visible dirty screen effect.
  • 6.7 Mixed Usage
  • 6.5 Movies
  • 6.7 TV Shows
  • 6.8 Sports
  • 7.0 Video Games
  • 6.1 HDR Movies
  • 7.0 HDR Gaming
  • 7.5 PC Monitor
  1. Updated Mar 01, 2021: Converted to Test Bench 1.6.
  2. Updated Nov 11, 2020: Updated review for accuracy and clarity.
  3. Updated May 21, 2020: Converted to Test Bench 1.5.
  4. Updated Feb 21, 2020: Converted to Test Bench 1.4.

Test Results

perceptual testing image
Market Context
Market Context
Market Context

The TCL S425 is a budget, entry-level TV. It sits below the TCL 5 Series/S525 2019. It's the replacement of the TCL S Series/S405 4k 2018. It's comparable to most other manufacturers' budget models, like the Samsung RU7100, the LG UK6300, or the Vizio E Series 2018.

Design
Design
Style
Curved No

The design is simple and in line with other TCL TVs. It's mainly made out of plastic and doesn't have a premium look to it, but its build shouldn't cause many issues. It's a bit different from the TCL S Series/S405 4k 2018 as it has black feet.

Design
Stand

The stand is made of plastic and supports the TV well. It's almost as wide as the TV and looks like the stand from the TCL S Series/S405 4k 2018, but with a black finish. The legs can't be reversed, and the TV wobbles if nudged.

Footprint of the 43" model stand: 32.2" x 7.3"

Design
Back
Wall Mount VESA 100x100

The back of the TV is plain. The top part is metal, while the bottom half and the rest of the body are plastic. The TCL S425 is available in many sizes and not all of them fit the same VESA mount size. Check here to see which VESA mount size is suitable for each TV size.

Sadly, there isn't any cable management.

Design
Borders
Borders 0.59" (1.5 cm)

The borders are a bit thicker than most TVs, but shouldn't distract you.

Design
Thickness
Max Thickness 2.91" (7.4 cm)

The TV itself isn't very thick and shouldn't stick out when wall-mounted.

6.5
Design
Build Quality

The TV has alright build quality. There aren't any gaps or loose ends, and although the TV doesn't have a premium look, we don't expect you to have issues with it.

Picture Quality
9.1
Picture Quality
Contrast
Native Contrast
6,054 : 1
Contrast with local dimming
N/A

The TCL S425 has an outstanding contrast ratio, which is expected from a VA panel TV. It can produce deep blacks, but unfortunately, there's no local dimming feature to further darken those blacks. Note that contrast may vary between units.

4.4
Picture Quality
SDR Brightness
Real Scene Peak Brightness
168 cd/m²
Peak 2% Window
142 cd/m²
Peak 10% Window
177 cd/m²
Peak 25% Window
177 cd/m²
Peak 50% Window
177 cd/m²
Peak 100% Window
177 cd/m²
Sustained 2% Window
141 cd/m²
Sustained 10% Window
177 cd/m²
Sustained 25% Window
177 cd/m²
Sustained 50% Window
177 cd/m²
Sustained 100% Window
177 cd/m²
Automatic Brightness Limiting (ABL)
0.017

The TCL S425 has bad peak brightness. It doesn't get bright enough to combat glare in well-lit rooms. Its brightness remains very consistent for the most part, except small highlights are a bit dimmer. We measured peak brightness after calibration in the 'Movie' Picture Mode.

0
Picture Quality
Local Dimming
Local Dimming
No
Backlight
Direct

This TV doesn't have a local dimming feature. The video above is for reference only.

0
Picture Quality
Local Dimming In Game Mode
Local Dimming
No
Backlight
Direct
4.1
Picture Quality
HDR Brightness
Real Scene Highlight
183 cd/m²
Peak 2% Window
85 cd/m²
Peak 10% Window
191 cd/m²
Peak 25% Window
191 cd/m²
Peak 50% Window
191 cd/m²
Peak 100% Window
191 cd/m²
Sustained 2% Window
85 cd/m²
Sustained 10% Window
190 cd/m²
Sustained 25% Window
191 cd/m²
Sustained 50% Window
191 cd/m²
Sustained 100% Window
191 cd/m²
Automatic Brightness Limiting (ABL)
0.059

This TV has bad HDR peak brightness. It gets brighter than in SDR, but it doesn't get bright enough to make highlights stand out. Once again, small areas aren't as bright as larger areas.

We measured HDR peak brightness in the 'Dark HDR' Picture Mode with TV Brightness set to 'Brighter'.

4.1
Picture Quality
HDR Brightness In Game Mode
Real Scene Highlight
182 cd/m²
Peak 2% Window
85 cd/m²
Peak 10% Window
190 cd/m²
Peak 25% Window
191 cd/m²
Peak 50% Window
191 cd/m²
Peak 100% Window
191 cd/m²
Sustained 2% Window
85 cd/m²
Sustained 10% Window
190 cd/m²
Sustained 25% Window
191 cd/m²
Sustained 50% Window
191 cd/m²
Sustained 100% Window
191 cd/m²
Automatic Brightness Limiting (ABL)
0.059
6.8
Picture Quality
Gray Uniformity
50% Std. Dev.
2.926%
50% DSE
0.203%
5% Std. Dev.
3.116%
5% DSE
0.112%

This TV has some uniformity issues as the corners of the screen are darker, but this may vary between units. There's also visible dirty screen effect in the center, which could be distracting during sports. In near-dark scenes, uniformity is worse as there's backlight bleed along the edges.

7.3
Picture Quality
Black Uniformity
Native Std. Dev.
1.142%
Std. Dev. w/ L.D.
N/A

The black uniformity is decent, but this may vary between units. There's visible backlight bleed at the edges which is noticeable when you watch dark scenes in a dark room.

4.8
Picture Quality
Viewing Angle
Color Washout
19°
Color Shift
23°
Brightness Loss
27°
Black Level Raise
15°
Gamma Shift
12°

This TV has bad viewing angles, which is normal for a VA panel. You quickly lose image accuracy when viewing from the side.

If you want an IPS TV with better viewing angles, check out the LG NANO85.

7.4
Picture Quality
Reflections
Screen Finish
Semi-gloss
Total Reflections
5.3%
Indirect Reflections
0.6%
Calculated Direct Reflections
4.7%

The TCL S425 has decent reflection handling. The semi-glossy finish limits the amount of light reflected, and you shouldn't have any issues using it in a moderately-lit room. However, it may struggle with direct sunlight on it.

5.9
Picture Quality
Pre Calibration
White Balance dE
3.36
Color dE
5.69
Gamma
2.33
Color Temperature
6,130 K
Picture Mode
Movie
Color Temp Setting
Warm
Gamma Setting
2.2

This TV has disappointing out-of-the-box color accuracy, but this may vary between units. Most colors are noticeably inaccurate, and it has a warm color temperature, giving the image a red/yellow tint. White balance is off and gamma doesn't follow the target well, so most scenes are darker than they should be.

9.1
Picture Quality
Post Calibration
White Balance dE
0.50
Color dE
2.10
Gamma
2.22
Color Temperature
6,532 K
White Balance Calibration
11 point
Color Calibration
Yes

This TV has outstanding color accuracy post-calibration. It's almost impossible to spot any remaining white balance inaccuracies. On the other hand, some color inaccuracies, mainly in the reds and the greens, remain after calibration. Just like with other TCL TVs, calibration is only possible via the mobile app, but you still need to use a colorimeter.

You can see our recommended settings here.

8.0
Picture Quality
480p Input

Upscaling of low-quality 480p content, such as DVDs, is good.

8.0
Picture Quality
720p Input

720p sources, such as cable boxes, are upscaled well.

9.0
Picture Quality
1080p Input

1080p content, like Blu-rays or game consoles, looks great with no obvious issues.

10
Picture Quality
4k Input

Native 4k content has no issues.

0
Picture Quality
8k Input

This is a 4k TV that can't display an 8k signal.

Picture Quality
Pixels
7.2
Picture Quality
Color Gamut
Wide Color Gamut
No
DCI P3 xy
80.17%
DCI P3 uv
86.24%
Rec 2020 xy
57.74%
Rec 2020 uv
63.53%

This TV has a decent color gamut, but it's not considered a wide color gamut. The true color gamut of the TV is shown by the maximum red, green, and blue in the Rec. 2020 gamut picture. Unfortunately, all other colors in the Rec. 2020 picture and all the DCI P3 colors are under-saturated. We assume that this happens because the TV is prioritizing brightness over color accuracy because it's so dim. These tests were done at 75% brightness stimulus. When we performed the same tests at a dimmer 50% stimulus, the accuracy was much better as can be seen in the following images:

The TV's EOTF follows the target curve fairly well until it rolls off, but most scenes are too dark. The 'Game' mode EOTF is similar, as you can see here.

If you wish to make the HDR brighter, you can set Gamma to '1.8' in the phone app. This results in this EOTF, which is a little brighter than before.

6.3
Picture Quality
Color Volume
Normalized DCI P3 Coverage ITP
70.9%
10,000 cd/m² DCI P3 Coverage ITP
22.8%
Normalized Rec 2020 Coverage ITP
55.7%
10,000 cd/m² Rec 2020 Coverage ITP
17.8%

The color volume is mediocre. It's limited by the lack of a wide color gamut, and it can't display dark, saturated colors.

8.3
Picture Quality
Gradient
Color Depth
10 Bit
Red (Std. Dev.)
0.099
Green (Std. Dev.)
0.109
Blue (Std. Dev.)
0.084
Gray (Std. Dev.)
0.109

This TV has great gradient handling. A little banding is visible, especially in darker shades of green and gray, but this shouldn't be a problem with real content. The Noise Reduction setting doesn't improve the gradients all that much.

10
Picture Quality
Temporary Image Retention
IR after 0 min recovery
0.00%
IR after 2 min recovery
0.00%
IR after 4 min recovery
0.00%
IR after 6 min recovery
0.00%
IR after 8 min recovery
0.00%
IR after 10 min recovery
0.00%

There isn't any temporary image retention on this TV, but this may vary between units.

10
Picture Quality
Permanent Burn-In Risk
Permanent Burn-In Risk
No

We don't expect VA panels to experience permanent image retention, as the VA panel in our long-term test appears immune.

Motion
8.1
Motion
Response Time
80% Response Time
4.7 ms
100% Response Time
12.1 ms

This TV has a great response time. There's some overshoot in the darker transitions, but overall, there's minimal blur trail behind fast-moving objects. This is a big improvement over the TCL S Series/S405 4k 2018.

4.0
Motion
Flicker-Free
Flicker-Free
No
PWM Dimming Frequency
120 Hz

The TV uses Pulse Width Modulation (PWM) to dim the backlight, but only below a 17/100 backlight setting, at which point it results in a 120Hz flicker which might bother some people. This is very different behavior than the TCL S Series/S405 4k 2018, which used PWM dimming throughout the entire range of its backlight level.

5.4
Motion
Black Frame Insertion (BFI)
Optional BFI
No
Min Flicker For 60 fps
120 Hz
60Hz For 60 fps
No
120Hz For 120 fps
N/A
Min Flicker for 60 fps in Game Mode
120 Hz

There's no Black Frame Insertion feature to improve the appearance of motion.

Motion
Motion Interpolation
Motion Interpolation (30 fps)
No
Motion Interpolation (60 fps)
No

Unfortunately, this TV can't interpolate lower frame rate motion, which won't please the fans of the 'Soap Opera Effect'.

7.2
Motion
Stutter
Frame Hold Time @ 24 fps
29.6 ms
Frame Hold Time @ 60 fps
4.6 ms

There's a little stutter due to the fast response time that results in a higher frame hold time of 24p content, like movies.

5.6
Motion
24p Judder
Judder-Free 24p
Yes
Judder-Free 24p via 60p
No
Judder-Free 24p via 60i
No
Judder-Free 24p via Native Apps
No

This TV can only remove judder from native 24p sources, like from Blu-rays. However, it can't remove it from native apps.

There's no specific option to remove judder as the TV does it automatically.

0
Motion
Variable Refresh Rate
Native Refresh Rate
60 Hz
Variable Refresh Rate
No
HDMI Forum VRR
No
FreeSync
No
G-SYNC Compatible
No
4k VRR Maximum
N/A
4k VRR Minimum
No VRR support
1080p VRR Maximum
N/A
1080p VRR Minimum
No VRR support
1440p VRR Maximum
N/A
1440p VRR Minimum
No VRR support
VRR Supported Connectors
No VRR support

The TCL 43S425 has a 60Hz panel and doesn't support any variable refresh rate technology.

Inputs
9.5
Inputs
Input Lag
1080p @ 60Hz
12.9 ms
1080p @ 60Hz Outside Game Mode
48.6 ms
1440p @ 60Hz
12.8 ms
4k @ 60Hz
13.0 ms
4k @ 60Hz + 10-Bit HDR
12.9 ms
4k @ 60Hz @ 4:4:4
13.0 ms
4k @ 60Hz Outside Game Mode
29.7 ms
4k @ 60Hz With Interpolation
N/A
8k @ 60Hz
N/A
1080p @ 120Hz
N/A
1440p @ 120Hz
N/A
4k @ 120Hz
N/A
1080p with Variable Refresh Rate
N/A
1440p with VRR
N/A
4k with VRR
N/A
8k with VRR
N/A

This TV has excellent low input lag provided you turn Game Mode to 'On.' The Game Mode is available in all picture modes. During our test, there were times where we had to turn off the TV or disconnect and reconnect the HDMI to get the lowest input lag. When we changed to Game Mode it went to an in-between state that had a higher input lag, and we got the lowest input lag after restarting the TV. Let us know in the discussions if you experience the same issue.

8.3
Inputs
Supported Resolutions
1080p @ 60Hz @ 4:4:4
Yes
1080p @ 120Hz
No
1440p @ 60Hz
Yes (native support)
1440p @ 120Hz
No
4k @ 60Hz
Yes
4k @ 60Hz @ 4:4:4
Yes
4k @ 120Hz
No
8k @ 30Hz or 24Hz
No
8k @ 60Hz
No

This TV supports the most common resolutions at 60Hz. It displays proper chroma 4:4:4 automatically when you connect a PC, which is important for reading text. For other sources, besides a PC to display 4:4:4, change the icon to 'Computer'.

When you connect a PC, the TV switches automatically to PC mode. There's no way to use the TV with a PC and be outside of PC mode.

For signals that require full bandwidth HDMI 2.0, enable the HDMI 2.0 setting in the 'HDMI Mode' settings page.

Inputs
Advanced Console Compatibility
Auto Low Latency Mode (ALLM)
Yes
PS5, 4k @ 120Hz + HDR
No
PS5, 4k @ 120Hz
No
PS5, 4k @ 60Hz + HDR
Yes
PS5, 1440p @ 120Hz
No
PS5, 1080p @ 120Hz
No
PS5, Variable Refresh Rate
No
Xbox Series X, 4k @ 120Hz + HDR
No
Xbox Series X, 4k @ 120Hz
No
Xbox Series X, 4k @ 60Hz + HDR
Yes
Xbox Series X, 1440p @ 120Hz
No
Xbox Series X, 1080p @ 120Hz
No
Xbox Series X, Variable Refresh Rate
No
Inputs
Inputs Specifications
HDR10
Yes
HDR10+
No
Dolby Vision
No
HLG
No
HDMI 2.0 Full Bandwidth
Yes (HDMI 1,2,3)
HDMI 2.1 Class Bandwidth
No
CEC Yes
HDCP 2.2 Yes (HDMI 1,2,3)
USB 3.0
No
Variable Analog Audio Out Yes
Wi-Fi Support Yes (2.4 GHz, 5 GHz)

It supports CEC, but we were unable to make it work with our Blu-ray player.

Inputs
Input Photos
Inputs
Total Inputs
HDMI 3
USB 1
Digital Optical Audio Out 1
Analog Audio Out 3.5mm 1
Analog Audio Out RCA 0
Component In 0
Composite In 1 (incl. adapter)
Tuner (Cable/Ant) 1
Ethernet 1
DisplayPort 0
IR In 0
SD/SDHC 0
Inputs
Audio Passthrough
ARC
Yes (HDMI 3)
eARC support
No
Dolby Atmos via TrueHD via eARC
No
DTS:X via DTS-HD MA via eARC
No
5.1 Dolby Digital via ARC
Yes
5.1 DTS via ARC
Yes
5.1 Dolby Digital via Optical
Yes
5.1 DTS via Optical
Yes

If you want to enable Dolby over ARC, you have to select the Dolby D/DTS setting.

Sound Quality
6.2
Sound Quality
Frequency Response
Low-Frequency Extension
134.54 Hz
Std. Dev. @ 70
3.19 dB
Std. Dev. @ 80
3.20 dB
Std. Dev. @ Max
5.27 dB
Max
86.2 dB SPL
Dynamic Range Compression
3.80 dB

This TV has mediocre frequency response. It can't produce any rumble or thump in its bass, but above the low-frequency extension, it performs well, so dialogue sounds clear. It can get fairly loud, but not enough for loud environments. Overall, this is better than the high-end TCL 6 Series/R625 2019.

6.6
Sound Quality
Distortion
Weighted THD @ 80
0.215
Weighted THD @ Max
0.764
IMD @ 80
3.73%
IMD @ Max
14.73%

The distortion performance is okay. There's not that much distortion at moderate listening levels, but it gets more noticeable at its max volume. However, this depends on the content and not everyone may hear it.

Smart Features
8.0
Smart Features
Interface
Smart OS Roku TV
Version 9.0
Ease of Use
Easy
Smoothness
Very Smooth
Time Taken to Select YouTube
4 s
Time Taken to Change Backlight
4 s
Advanced Options
Many

The Roku interface is very responsive, smooth, and has almost no lag. The navigation menu is easy to use, but nearly all navigation has to pass through the home menu, which can be tiring at times.

0
Smart Features
Ad-Free
Ads
Yes
Opt-out
No
Suggested Content in Home
Yes
Opt-out of Suggested Content
No

We saw no ads during our testing, but TCL TVs are known to have ads. You can opt-out of personalized ads, but then you get ads that are not targeted. To opt-out of personalized ads, you have to enable the 'Limit Ad Tracking' option in the Advertising menu.

8.0
Smart Features
Apps and Features
App Selection
Great
App Smoothness
Average
Cast Capable
Yes
USB Drive Playback
Yes
USB Drive HDR Playback
Yes
HDR in Netflix
Yes
HDR in YouTube
Yes

Roku offers a great selection of apps that you can download and they work smoothly for the most part.

6.0
Smart Features
Remote
Size
Small
Voice Control
No
CEC Menu Control
No
Other Smart Features
No
Remote App Roku

The remote is very simple. It has basic navigation buttons and four dedicated app buttons. The volume controls are on the side of the remote and can be hard to find the first time. It doesn't have voice control, but you can use voice control through the Roku app on your mobile device.

Smart Features
TV Controls

The TV controls are located on the underside of the TV, near the TCL logo. The functionality is limited, and you can only turn the TV On/Off, change input sources, and adjust the volume.

Smart Features
In The Box

  • Manual
  • Batteries
  • Remote
  • Composite In adapter

Smart Features
Misc
Power Consumption 42 W
Power Consumption (Max) 73 W
Firmware 9.0.0 build 4151-30

Differences Between Sizes And Variants

We tested the 43 inch TCL 4 Series 2019 (43S425). For the most part, we expect our review to be valid for the 49 inch (49S425), 50 inch (50S425), 55 inch (55S425), 65 inch (65S425), and 75 inc (75S425) versions. The S421 variant appears to be sold at Walmart only and the S423 is nearly the same, except the feet are silver. If you find any performance differences in the S423 or S421, please let us know in the discussions.

Size Standard Model S423 Walmart VESA Mount
43" 43S425 43S423 43S421 100 x 100
49" 49S425 - - 200 x 200
50" 50S425 50S423 - 200 x 200
55" 55S425 55S423 55S421 200 x 200
65" 65S425 65S423 65S421 400 x 200
75" 75S425 75S423 - 300 x 300

If someone comes across a different type of panel or if their TCL S425 doesn't correspond to our review, let us know and we will update the review. Note that some tests, such as gray uniformity, may vary between units.

The unit we tested was manufactured in January 2019.

Compared To Other TVs

Comparison picture

Top left: TCL S325 (40S325). Bottom left: TCL (43S405). Middle: TCL S425 (43S425). Top right: Vizio V Series 2019 (V505-G9). Bottom right: Samsung RU7100 (UN55RU7100). 

The TCL 4 Series 2019 is an okay TV that can deliver decent picture quality and is equipped with great smart features. It's a cheap option that's available in a wide range of sizes. Also see our recommendations for the best budget TVs, the best Roku TVs, and the best smart TVs.

TCL 5 Series/S525 2019
43" 50" 55" 65"

The TCL S525 is a bit better than the TCL S425. The S525 is a lot brighter, and it can remove judder from all sources. The S525 also has an optional motion interpolation feature. The S425 has better reflection handling.

TCL S Series/S405 4k 2018
43" 49" 55" 65"

The TCL S Series S405 4k and the TCL 4 Series S425 have very similar performance. The TCL S425 has marginally higher contrast ratio, which is great for watching movies in a dark room, and a slightly lower input lag, which is good for playing video games. The S405, on the other hand, can remove 24p judder from the native apps.

TCL 4 Series 2020
43" 50" 55" 65" 75" 85"

The TCL 4 Series 2019 is slightly better than the TCL 4 Series 2020. They're very similar TVs, but the 2019 model has a much quicker response time and lower input lag. However, the 2020 model removes judder from native apps and has much better out-of-the-box color accuracy.

TCL 5 Series/S535 2020 QLED
50" 55" 65" 75"

The TCL 5 Series/S535 2020 QLED is much better than the TCL 4 Series 2019, mainly because it sits higher up in the lineup. The 5 Series has a decent-performing full-array local dimming feature, which the 4 Series doesn't have. It also displays a wide color gamut and gets much brighter, so it's a better choice for watching HDR content. Lastly, the 5 Series removes 24p judder from any source, while the 4 Series can only remove it from native 24p content.

Toshiba Fire TV 2020
43" 50" 55"

The TCL 4 Series 2019 is slightly better than the Toshiba Fire TV 2020. The TCL has a higher contrast ratio, better color accuracy, and lower input lag. It also has better gradient handling and can display chroma 4:4:4 properly. The Toshiba gets much brighter, though, and it has better reflection handling.

TCL 6 Series 2018
55" 65" 75"

The TCL 6 Series R617 is much better than the TCL 4 Series S425. The TCL R617 has better dark room performance, thanks to its local dimming feature, and better black uniformity. The TCL 6 Series can get brighter and has a better color leading to better HDR performance. The R617 can display judder-free movies, whereas the TCL S425 has a lower input lag, great for games, and a little faster response time, so motion looks slightly crisper.

Vizio V Series 2020
40" 43" 50" 55" 58" 60" 65" 70" 75"

The Vizio V Series 2020 and the TCL 4 Series 2019 are very similar. The Vizio has better reflection handling and color accuracy, and it gets brighter to combat glare. However, the TCL has a much faster response time and a higher native contrast ratio.

LG UN6950
43" 50" 55" 60" 65" 75"

The LG UN6950 is slightly better than the TCL 4 Series 2019. The LG we tested has a VA panel like the TCL, but there are variants with an IPS panel. It has a lower input lag, it removes judder from native 24p sources, such as apps, and it gets a bit brighter. However, the TCL has a better contrast ratio, a quicker response time, and the built-in Roku TV is easier to navigate.

TCL 5 Series 2018
43" 49" 55" 65"

The TCL 5 Series S517 is a bit better than the TCL 4 Series S425. The S517 can get brighter and is more suitable if you have a bright room; it can display a wider color gamut, which helps HDR performance. Also, the S517 has a motion interpolation feature to please the soap opera effect fans and can display judder-free movies. The TCL S425 has somewhat lower input lag, which is great for video games, and delivers a little crisper motion thanks to the faster response time.

Hisense H6570G
43" 50" 55" 65" 70" 75" 85"

The TCL 4 Series 2019 is better than the Hisense H6570G. The TCL has a much quicker response time, much lower input lag, upscales native 4k content properly, and the built-in Roku interface is easier to use. However, the Hisense gets brighter, has better color accuracy, and removes judder from 24p sources via native apps.

TCL 6 Series/R625 2019
55" 65"

The TCL 6 Series/R625 2019 is a much better TV than the TCL 4 Series 2019. The R625 looks a lot more premium, has much better picture quality thanks to its local dimming feature, significantly brighter screen, better black uniformity, and better viewing angles. If you watch a lot of HDR content, the R625 is a much better choice thanks to its much higher HDR peak brightness and wider color gamut. While the 4 Series has a much faster response time, the R625 has a significantly better black frame insertion feature and less noticeable on-screen flicker, giving it better motion handling overall. On the other hand, the 4 Series may represent better value for some people.

TCL 3 Series 2019
32" 32" 40" 43" 49"

The TCL 4 Series/S425 2019 is much better than the TCL 3 Series S325. The TCL S425 supports HDR and has a better dark room performance, thanks to its higher native contrast ratio. The TCL S425 supports 4k and has a faster response time, which is great for watching sports and playing video games.

LG UM7300
43" 49" 50" 55" 65"

The LG UM7300 is a better TV than the TCL 4 Series 2019 for most uses. The LG uses an IPS panel, which gives it better viewing angles but worse black levels. The LG can get a lot brighter, has better gray uniformity, and more accurate colors. On the other hand, the TCL has a slightly wider color gamut and better gradient handling.

Samsung NU6900
43" 50" 55" 65" 75"

The Samsung NU6900 and the TCL 4 Series 2019 are similar-performing TVs. The Samsung looks a bit more premium, can get brighter, has better gray and black uniformity, has a better black frame insertion feature, and has a motion interpolation feature. On the other hand, the TCL handles reflections better, has a wider color gamut, has a faster response time, and a better smart interface.

Toshiba Fire TV 2019
43" 50" 55"

The TCL 4 Series S425 is better than the Toshiba Fire TV 2019. The S425 has better contrast, a better response time, it can remove judder from some sources, and has significantly lower input lag. The Toshiba is brighter and has an optional motion interpolation feature.

Vizio V Series 2019
40" 43" 43" 50" 55" 55" 60" 65" 65" 70" 75"

The Vizio V Series 2019 is a bit better than the TCL 4 Series/S425 2019. The Vizio can get brighter, which is great if your room has more ambient light, but it's also better in a dark room thanks to the much more uniform blacks. The TCL, on the other hand, has a lower input lag and a faster response time that make it a better choice for gamers or those who want to use it for a PC monitor.

Samsung NU7100
40" 43" 50" 55" 58" 65" 75"

The Samsung NU7100 is a bit better than the TCL 4 Series S425. The Samsung NU7100 can get brighter and is more suitable for a bright room. The NU7100 has slightly better gray uniformity, which can be important to sports fans, and a motion interpolation feature to please the soap opera effect fans. The TCL S425 has a faster response time that delivers crisper motion and handles reflections slightly better, which can be important when you watch TV shows in a brighter room.

Hisense H6570F
43" 50" 55" 65"

The TCL 4 Series 2019 is better than the Hisense H6570F. The TCL displays 720p cable content significantly better than the Hisense, and has a better input lag with HDR content, which is great for games. Also, the TCL can remove judder from movies but has worse black uniformity, which matters in dark scenes when in a dark room.

LG UK6300
43" 49" 50" 55" 65"

These are two different types of TVs. If you have a bright room with a wide seating arrangement, then the LG UK6300 is a better choice as it can get brighter and has wide viewing angles thanks to its IPS panel. The TCL S425, on the other hand, is more suitable if you watch movies in a dark room and you sit straight in front. The TCL S425 has deeper blacks thanks to the higher native contrast ratio. The LG UK6300 has an optional motion interpolation feature to please soap opera effect fans.

Samsung Q50/Q50R QLED
32"

The Samsung Q50/Q50R QLED is a bit better than the TCL 4 Series/S425 2019, but it's only available in a 32" size, whereas the S425 is available 43" to 75" sizes. The Q50 is brighter, has better gray uniformity, and can display a wide color gamut.

Vizio E Series 2018
43" 50" 55" 65" 70" 75"

The Vizio E Series 2018 is better than the TCL S425. The Vizio can get much brighter and has a local dimming feature to improve dark room performance. It also includes an optional black frame insertion feature that can help make motion crisper. The TCL S425 has a lower input lag which is great for playing video games.

Samsung RU7100
43" 50" 55" 58" 65" 75"

The Samsung RU7100 is somewhat better than the TCL S425. The Samsung RU7100 can get brighter and is more suitable for a bright room. It also incorporates a motion interpolation feature to please the soap opera effect fans. The TCL S425, on the other hand, can remove 24p judder from native 24p sources and has a faster response time that can deliver a crisper image.

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