Amazon Renewed S45H Review: Dolby Atmos Soundbar with 2.0 Channel Limit
The Amazon Renewed TCL S45H delivers immersive spatial audio and simple setup for budget-conscious users upgrading TV sound, though its 2.0 channel design lacks deep bass.
By Elvis Dicki
Updated October 21, 2026
For anyone frustrated with the thin, lackluster audio from their television’s built-in speakers, a soundbar is the most straightforward upgrade path. The Amazon Renewed S45H from TCL presents an intriguing option, packaging advanced audio formats like Dolby Atmos and DTS Virtual:X into a compact, single-unit design. This renewed model is positioned for users who want a significant audio improvement for movies, TV, and music without the complexity or cost of a multi-speaker system. In essence, it’s a budget-friendly gateway to cinematic sound, though its 2.0 channel configuration means it has inherent limitations.
This review analyzes the TCL S45H S Class 2.0 Channel Sound Bar based on its specifications, feature set, and aggregated owner feedback to determine if it’s the right audio upgrade for your living space. The bottom line: it’s a compelling choice for small to medium rooms where easy setup and virtualized surround sound are priorities, but those craving earth-shaking bass or a true multi-channel experience may need to look elsewhere.
TCL S45H 2.0 Channel S Class Soundbar
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Amazon Renewed S45H at a Glance
| Specification | Detail |
|---|---|
| Audio Channels | 2.0 Channel |
| Total Power Output | Up to 100 Watts |
| Key Audio Technologies | Dolby Atmos, DTS Virtual:X |
| Connectivity | HDMI eARC, Optical, Bluetooth, USB, Auxiliary |
| Smart Feature | Ai Sonic Auto Room Calibration |
| Bass System | Built-In Bass Reflex Port |
| Color | Black |
| Mounting | Floor Standing (Wall Kit Included) |
| Warranty | 90 Days Limited |
| Condition | Amazon Renewed |
Design and Build
The TCL S45H sports a classic, low-profile soundbar design intended to sit discreetly in front of a television or be mounted on a wall using the included hardware. Its black finish allows it to blend with most home theater setups. As an Amazon Renewed product, it is a professionally inspected and tested pre-owned unit, which may show minor cosmetic wear but is guaranteed to be fully functional. The product arrives with all necessary accessories for setup, including a remote control, HDMI cable, power cord, and the wall installation kit, ensuring you have everything needed to get started out of the box.
Performance and Features
Audio Performance and Technologies
The core promise of the S45H is its support for premium spatial audio formats. Dolby Atmos and DTS Virtual:X are software-driven technologies designed to create a more immersive, three-dimensional soundscape from a limited number of physical speakers. By processing audio to simulate height and surround effects, they aim to place the listener in the center of the action for movies, music, and games. The soundbar’s total power output is listed as up to 100 watts, which is intended to deliver room-filling audio. A built-in bass reflex port is engineered to enhance low-frequency response, providing stronger bass from the compact enclosure than might otherwise be expected from a 2.0 channel system without a dedicated subwoofer.
Connectivity and Ports
Versatility in connection is a strong suit for the S45H. The highlight is the HDMI eARC (Enhanced Audio Return Channel) port, which allows for a single-cable connection to compatible modern TVs. This simplifies setup and enables high-quality audio transmission from the TV’s apps to the soundbar. For older TVs, a digital optical audio input is provided. Wireless Bluetooth connectivity enables easy streaming of music from smartphones, tablets, or other devices. Additional ports include a USB input for playing audio files directly from a flash drive and a 3.5mm auxiliary input for wired connections, covering nearly every common audio source.
Key Features and Software
Beyond the core audio formats, the TCL S45H includes Ai Sonic Auto Room Calibration. This feature uses a microphone-less, AI-powered process to analyze the acoustic properties of your room and automatically adjust the soundbar’s output for optimal quality tailored to your specific space. Control is managed via the included remote control or touch controls on the unit itself. The soundbar is compatible with a wide range of devices including televisions, laptops, projectors, smartphones, and tablets, making it a central hub for various audio needs.
Setup, Support and Ownership
Setup is designed to be straightforward, primarily revolving around the single HDMI eARC cable connection to a compatible TV. For other setups, the optical or auxiliary connections provide alternatives. The soundbar is a standalone unit; the specifications do not list compatibility with external subwoofers or surround satellite speakers, indicating it is designed as an all-in-one solution. As a renewed product, it comes with a 90-day limited warranty from Amazon Renewed. For ongoing support, users may need to reference the online manual for detailed instructions, as the included quick start guide provides basic guidance.
What Owners Say
Owner feedback for the Amazon Renewed S45H is predominantly positive, with a high percentage of top ratings. Many users praise its dramatic improvement over standard TV speakers, citing easy setup via HDMI ARC and clear, detailed sound that gets surprisingly loud. Several note it works seamlessly with Roku and TCL TVs, significantly enhancing dialogue clarity and overall audio immersion for movies and TV shows.
However, some reviews present a more nuanced picture. A common point among critical feedback is that the promised Dolby Atmos and DTS Virtual:X surround effects can be subtle or difficult to perceive, with one owner noting they heard no distinct surround sound despite proper eARC connections and content. The AI room calibration feature is also mentioned by some as not producing an audible difference. These experiences highlight that the virtualized surround sound is a software enhancement over a 2.0 channel foundation, and its effectiveness can vary based on content, room acoustics, and user expectations. For broader context on soundbar performance, explore our guide to the best surround sound soundbars.
Pros and Cons
Pros
- Supports immersive Dolby Atmos and DTS Virtual:X audio formats
- Extremely simple one-cable setup with HDMI eARC
- Versatile connectivity including Bluetooth, USB, and optical
- AI-powered auto room calibration for tailored sound
- Compact design with solid power output for its size
- Significant audio upgrade over built-in TV speakers
Cons
- 2.0 channel design limits deep bass without a subwoofer
- Virtual surround effects may be subtle or content-dependent
- Best suited for small to medium-sized rooms
- Renewed condition may include minor cosmetic wear
- AI calibration feature may not yield a noticeable change for all users
- Limited to a 90-day warranty period
Who Should Buy It (and Who Should Skip It)
The Amazon Renewed TCL S45H is an ideal fit for budget-minded users with a small to medium-sized living room or bedroom who are making their first leap from poor TV audio. Its strength lies in delivering a much richer, fuller, and more powerful sound with minimal fuss. If your primary goals are clearer dialogue, enhanced movie immersion, and the convenience of wireless music streaming, this soundbar delivers excellent value. It’s particularly appealing for those with modern TVs featuring HDMI eARC.
Conversely, you should consider other options if you have a large, open-concept space that requires more powerful, distributed audio. If deep, rumbling bass is non-negotiable for your movie or music experience, the lack of a dedicated subwoofer will be a significant drawback. Audiophiles or home theater enthusiasts seeking a true, discrete multi-channel surround sound experience with pronounced overhead effects may find the virtualized processing of the S45H insufficient. For those prioritizing absolute audio clarity for dialogue, our review of the best TV soundbars for voice clarity offers specialized alternatives.
Final Verdict
The Amazon Renewed TCL S45H S Class soundbar successfully fulfills its core mission: to be a dramatic and affordable upgrade over built-in television speakers. Its support for modern audio formats, dead-simple HDMI eARC setup, and versatile connectivity make it a highly practical and effective solution for everyday viewing and listening. The 100-watt output provides ample volume for most environments, and the inclusion of features like auto room calibration shows thoughtful design aimed at optimizing the user experience.
However, it’s crucial to understand its limitations within the context of its 2.0 channel design. The Dolby Atmos and DTS Virtual:X effects are software simulations, not a replacement for physical surround speakers. While it produces a commendably wide soundstage, it cannot replicate the dedicated bass impact of a system with a subwoofer. As a renewed product, it offers significant cost savings but comes with a shorter warranty. Ultimately, for the price-conscious buyer seeking a major step up in TV audio quality with modern features, the TCL S45H is a compelling and sensible choice that punches above its weight class. For more insights into integrating smart audio into your home, check out our picks for the best AI smart home devices.
FAQs
Does the TCL S45H come with a subwoofer?
No, the TCL S45H is a 2.0 channel soundbar, meaning it consists of left and right channels within a single enclosure. It does not include a separate subwoofer. It uses a built-in bass reflex port to enhance its low-frequency response, but it is not designed to produce the deep, powerful bass of a system with a dedicated subwoofer.
What does “Amazon Renewed” mean for this soundbar?
Amazon Renewed indicates this is a pre-owned product that has been professionally inspected, tested, and cleaned by qualified suppliers to work and look like new. It comes with a 90-day limited warranty. The unit may have minor cosmetic imperfections but is guaranteed to be fully functional. All necessary accessories, such as the remote and cables, are included.
How do I connect the S45H to my TV?
The simplest method is to use the included HDMI cable to connect the soundbar’s HDMI eARC port to the HDMI ARC or eARC port on your television. This single cable handles both audio playback and control via your TV remote. If your TV does not have an HDMI ARC port, you can use a digital optical cable (not included) to connect the soundbar’s optical input to your TV’s optical output.
Can I really get Dolby Atmos sound from a 2.0 channel soundbar?
Yes, but with an important distinction. The TCL S45H supports Dolby Atmos audio processing. It uses advanced algorithms to virtualize the height and surround channels that would normally come from separate speakers, creating a more immersive soundscape from its two-channel design. The effect is a simulated, wider audio experience rather than the discrete, object-based sound delivered by a full system with upward-firing or ceiling speakers.
About the author
Elvis Dicki writes reviews and buying guides for CyberSecLabs.