TCL 4K Smart LED TV (65″ Class) – 65S425 Review

The TCL 65S425 stands as one of the brand’s most accessible 4K smart television options, combining modern viewing technology with practical smart features at a competitive price point. As a 65-inch direct-lit LED TV, it aims to deliver a balance between performance, functionality, and affordability.

Picture Quality

At the heart of this television is its 3840 x 2160 Ultra HD resolution, which provides four times the pixel density of Full HD displays. This resolution ensures that 4K content—from streaming services to Ultra HD Blu-rays—appears with exceptional clarity and detail. Smaller text and fine textures are rendered cleanly, making it suitable for both entertainment and casual use.

The television employs HDR (High Dynamic Range) technology that supports a wide color gamut and improved contrast, though it’s worth noting that this is not a Dolby Vision-capable model. HDR-compatible content reveals visibly expanded brightness levels and richer colors compared to standard dynamic range, though peak brightness caps at around 300 nits, which is brighter than most entry-level QLEDs but not as luminous as premium models. This makes HDR effects more subtle, particularly in brightly lit rooms.

While HDR helps deepen blacks and expand highlights, the TV’s edge-lighting sometimes reveals minor light blooming around bright objects on dark backgrounds, though the visible zones are minimal for this class. For gaming or dark-room viewing, the image remains enjoyable, though it won’t deliver the perfect black levels seen in OLED displays. Daytime viewing is enhanced by a generous peak brightness, producing natural skin tones and clear vibrancy in well-lit environments. Motion handling is adequate, with the 120Hz CMI performance smoothing rapid movement without introducing significant artifacts.

Smart Features and Interface

Powered by Roku TV, the 65S425 offers one of the simplest and most intuitive smart TV platforms available. The interface is uncluttered and responsive, making navigation through content straightforward even for users new to smart televisions. The home screen is configurable and allows for quick access to frequently used streaming services.

Over 500,000 movies and TV episodes are accessible through a range of integrated apps including Netflix, Disney+, YouTube, HBO Max, and Amazon Prime Video. The platform’s universal search feature scans across multiple services at once when you look for content, reducing time spent hunting through individual apps. Setup is streamlined—just connect to Wi-Fi or Ethernet, log in to your preferred services, and begin watching.

Alexa and Google Assistant compatibility allow for hands-free voice control, enabling users to adjust volume, switch inputs, launch apps, and find content simply by speaking. For those who prefer using their own smart assistants or smart home setups, the 65S425 integrates well with both ecosystems.

Roku’s mobile app is also available for iOS and Android, adding a second-screen remote, private listening via headphones, and keyboard input for typing queries or signing in. While the platform does not have as many sophisticated settings as some high-end competitors, the simplicity is a benefit for users prioritizing usability over deep customization.

Design and Connectivity

Physically, the TV is designed with a sleek, modern appearance. With its thin bezels and angular stand, it will fit well in most contemporary living spaces. The stand consists of two splayed feet which help distribute weight and avoid wobbling—an important detail for a large 65-inch display. While those hoping to wall-mount will be pleased to know it’s compatible with a standard 200mm x 200mm VESA mount.

In terms of port selection, the TV keeps options basic but practical. With three HDMI ports, the majority of users should have enough connectivity for devices like gaming consoles, streaming boxes, and soundbars. One of these is ARC-compatible, allowing for simplified audio output to a compatible surround system or soundbar without multiple cables. An RF input accommodates cable/satellite connections, while a single USB port is present for media playback. Digital audio optical out, composite video input, and a 3.5mm headphone jack round out the connectivity list.

While the range and speed of built-in Wi-Fi is reliable for streaming, hard-wired Ethernet might be preferred for 4K streaming or competitive gaming to guarantee maximum stability without interference.

Audio Performance

The built-in two-channel audio system (with 2 x 8W speakers) suffices for casual viewing and news, producing clear dialog and well-balanced mids. However, with larger 4K content—especially cinematic blockbusters or action scenes—there’s a noticeable lack of deep bass and dynamic range. Explosions and music with heavy low-end frequencies will come across as thin. Having external speakers or a soundbar is strongly recommended if you care about fuller sound or immersive home theater audio.

Overall Usability

The TCL 65S425 is well suited to a variety of living room arrangements. Its combination of 4K resolution, HDR support, and the Roku smart interface delivers a straightforward viewing experience at an approachable price point. It’s particularly well suited for family rooms, dorms, or as a secondary TV in a bedroom—anywhere the value of built-in apps and excellent picture quality outpaces the need for advanced panel technologies or reference-grade audio.

For users upgrading from older 1080p models or those new to 4K content, the leap in clarity is immediately appreciable. Gamers will benefit from the 120Hz CMI motion handling, although latency is typical for non-Gaming-Focused LED displays, so those who prioritize competitive performance may want to pair it with a dedicated gaming monitor for specific titles.

The TCL 65S425 represents a solid, no-nonsense approach to modern television. It doesn’t chase performance extremes, but what it offers—crisp Ultra HD pictures, versatile HDR, robust smart features, and reliable connectivity—pairs together to make for an enjoyable, user-friendly centerpiece in any home entertainment setup.