The soundbar market is crowded with products that promise cinema-scale audio and deliver little more than a marginal improvement over built-in TV speakers. The TCL S45H takes a different approach — it skips smart features, the Wi-Fi module, and voice assistant integration entirely, focusing its engineering budget on genuine audio decoding capability and connectivity that most buyers at this price tier simply don't get. Whether that trade-off works depends entirely on how you use your television setup, and this review exists to answer that question clearly.
Design and Build: A Soundbar That Knows Where It Belongs
Physical dimensions, build quality, and setup considerations
At just over 80 centimeters wide, the S45H is sized to sit comfortably in front of most 55-inch and larger televisions without overhanging awkwardly or looking undersized against the screen. Its 98mm height keeps it low enough to avoid blocking picture on most TV stands — though buyers with unusually low-profile setups should measure before purchasing.
The unit weighs just over three kilograms — enough to feel substantial and stable without being difficult to move or wall-mount solo. At 60mm deep, it won't jut aggressively from a bracket or demand excessive shelf clearance.
Physical controls are built directly into the unit, which matters more than it sounds. If the remote is misplaced or its battery dies, basic operation remains accessible without pairing a phone or navigating menus. The included remote is a conventional battery-powered unit. There is no rechargeable remote — a cost-conscious decision that won't affect most households day-to-day, but one that sits slightly below the standard set by the rest of the hardware.
Physical Specifications
- Width
- 810 mm (~81 cm)
- Height
- 98 mm
- Depth
- 60 mm
- Weight
- 3.13 kg
- Controls
- On-unit + remote
Audio Performance: What Two Channels and Premium Decoding Deliver
Channel configuration, format support, and what each means in practice
Understanding the Channel Configuration
The S45H outputs true 2-channel stereo — not a simulated surround field. For buyers upgrading from television-mounted speakers, this means a genuine and immediately noticeable improvement in stereo separation, dialogue clarity, and overall soundstage width.
Two-channel setups excel at music, streaming content, and dialogue-heavy television. They produce a cleaner, more focused presentation than overprocessed pseudo-surround from lesser units. The trade-off is that deep low-frequency extension for action films requires either a separate subwoofer pairing or adjusted expectations about bass depth.
For the vast majority of everyday viewing and listening, a well-engineered two-channel soundbar outperforms a mediocre multi-channel one. The S45H's 2.0 configuration is a deliberate design choice, not a budget cut.
Dolby Atmos and DTS:X: Real Decoding on a 2-Channel Bar
Supporting both Dolby Atmos and DTS:X — the dominant object-based surround formats used by Netflix, Disney+, Apple TV+, and virtually all modern streaming services — the S45H decodes audio signals that are more sophisticated than what most soundbars at this price tier handle natively.
On a 2-channel system, Atmos and DTS:X content is downmixed intelligently. You won't experience height-channel audio as you would from a 5.1.2 rig, but you do get proper decoding rather than compression fallback — meaning the audio fidelity of the stereo output is meaningfully better than an incompatible unit produces from the same source.
Connectivity: Where the TCL S45H Stands Apart
Inputs, outputs, and wireless connections in full detail
HDMI eARC — The Right Connection for Modern TVs
The single HDMI port runs the current eARC (Enhanced Audio Return Channel) standard. This allows high-bandwidth, lossless audio formats to pass from your television to the soundbar over a single cable — without the compression required by the older ARC standard.
In practice, one cable between the soundbar and TV handles everything. Every source connected to your TV — game consoles, streaming sticks, media players — routes audio automatically through eARC to the soundbar without additional cables or manual input switching.
Most televisions sold in the last several years include an eARC-compatible port. If yours does, this is the only cable you need. Setup takes under a minute.
Bluetooth 5.2 With Codec Support That Actually Matters
Three Bluetooth codecs cover virtually every quality wireless audio scenario a modern user encounters, automatically negotiating the best available connection without manual configuration required.
-
aptX Adaptive
Current-generation variable bitrate codec. Adjusts dynamically to maintain quality in congested wireless environments. Supported by most recent Android devices. -
aptX
Standard high-quality codec for Android phones and Windows laptops. Delivers noticeably better audio than baseline Bluetooth compression. -
AAC
The preferred codec for iPhones, iPads, and Macs. iOS and macOS users get a quality wireless connection rather than a compressed fallback.
Complete Input & Output Summary
| Connection | Standard | Best Used For |
|---|---|---|
| HDMI | eARC / HDMI 2.0 | Primary TV connection — lossless audio passthrough from all connected sources |
| Bluetooth | v5.2 (aptX Adaptive, aptX, AAC) | Wireless audio from phones, tablets, and laptops |
| S/PDIF Out | Digital optical / coaxial | Older TVs without HDMI ARC, or routing audio to secondary equipment |
| AUX Input | 3.5mm analog | Wired connection for any device — laptops, older players, or instruments with a preamp |
What the S45H Does Not Have — And Why It Matters
The deliberate omissions that define this soundbar’s identity
These omissions are consistent and tell a clear story. They are the engineering trade-off that allows the S45H to offer genuine Atmos decoding and premium Bluetooth at its price point. They are not oversights — they are a positioning decision. Buyers who need these features should know before purchasing.
No network-based streaming, no over-the-air firmware updates, and no multi-room audio. Services like Spotify, Apple Music, and Tidal cannot stream directly to the soundbar.
Alexa, Google Assistant, and Siri cannot control the soundbar. There are zero microphones in the unit — no hands-free capability of any kind.
No EQ access from a smartphone, no custom sound profiles, no firmware management via mobile, and no app-based remote control.
Direct casting from streaming apps is not available. Audio must route through a connected TV source or via Bluetooth from a phone or tablet.
Spotify’s direct speaker integration is not supported. Streaming works via Bluetooth from the app on your phone or tablet instead.
Bluetooth pairing requires the standard manual process rather than a one-tap NFC approach. A minor inconvenience rather than a recurring frustration.
Real-World Usage: Who Should Buy the TCL S45H
Match your use case before purchasing
- Have a modern TV with an eARC port and want the simplest, highest-quality single-cable audio connection
- Stream from devices connected to your TV (Apple TV, Fire Stick, Roku, PlayStation, Xbox) and want audio routed automatically without switching inputs
- Listen to music wirelessly from an Android or Apple phone and care about connection quality, not just convenience
- Want a no-fuss setup that works reliably without app management, network configuration, or ecosystem lock-in
- Are connecting an older TV via optical S/PDIF and want a meaningful audio upgrade without replacing the television
- Want to stream music directly to the soundbar from Spotify, Tidal, or similar services without involving a separate phone or device
- Expect Alexa or Google Assistant voice control as part of your daily audio routine
- Need wireless multi-room audio as part of a whole-home speaker system or an existing smart ecosystem
- Want to fine-tune EQ settings and sound modes through a dedicated smartphone app
- Are looking for a 2.1 or surround configuration with satellite speakers or a dedicated subwoofer channel output
Competitive Positioning: How the S45H Sits in the Market
How it compares to the logical alternatives at its price tier
The S45H occupies a practical position between two categories: budget soundbars that carry Atmos branding but lack the hardware to decode it properly, and premium smart soundbars that charge significantly more for streaming features and voice control many users don't actually use. The comparison below maps its hardware strengths and deliberate omissions against both reference points.
| Feature | TCL S45H | Budget 2.0 Bar | Mid-Tier Smart Bar |
|---|---|---|---|
| Dolby Atmos Decoding | Marketing Only | ||
| DTS:X Support | Rare | Sometimes | |
| HDMI eARC | Rare | ||
| aptX Adaptive Bluetooth | Uncommon | Uncommon | |
| Wi-Fi / Smart Features | |||
| Voice Assistant Support | |||
| Dedicated App Control |
Honest Assessment: Strengths and Limitations
A balanced look at what this soundbar does well and where buyers should manage expectations
Where It Genuinely Excels
The combination of Dolby Atmos and DTS:X decoding, eARC connectivity, and multi-codec Bluetooth — particularly aptX Adaptive — represents audio hardware capability that is not commonly found at this product’s size and implied price tier. These are not marketing add-ons; they are functional decoding systems that improve what you actually hear from the source material.
The physical design is proportionate and practical for most living room configurations. Input variety covers the full range from HDMI to optical to a simple analog jack, meaning it connects to almost any television regardless of age. For eARC-equipped TVs, setup is genuinely plug-and-play — one cable, automatic audio routing from all sources, nothing else required.
Where Expectations Should Be Managed
The 2-channel configuration is the most significant functional boundary. Stereo done well genuinely outperforms mediocre surround — but it sets a ceiling on the spatial audio experience. Atmos content will be decoded and played, but without height channels or a wide multi-driver array, the experience is fundamentally stereo, not dimensional.
The complete absence of smart features is a real limitation for users who expect a connected, app-managed audio experience. This is not fixable via firmware — the S45H has no Wi-Fi radio to receive updates. The non-rechargeable remote is a minor inconvenience in an otherwise considered hardware package, but it quietly undercuts an impression the rest of the unit works hard to establish.
Common Buyer Questions, Answered
The questions people search for before purchasing
Final Verdict
Audio Hardware That Earns Its Position
The TCL S45H is a soundbar built on a clear set of priorities: genuine audio format compatibility, reliable connectivity, and a physical footprint that works with real living room furniture. Its Dolby Atmos and DTS:X decoding is real, its eARC implementation is current-generation, and its Bluetooth codec support exceeds what most competing products at this tier bother to include.
The lack of Wi-Fi, smart features, and voice control is a deliberate engineering choice, not a gap. For buyers who connect to a modern TV via a single cable and want hardware that simply works — reliably, without a network dependency — the S45H delivers exactly that.
You want capable, genuine audio hardware with no ecosystem strings attached — clean TV audio via eARC, or high-quality wireless streaming from your phone. Setup takes under a minute and stays out of your way.
Your ideal soundbar streams music independently, responds to voice commands, integrates into a smart home setup, or requires app-based management. This soundbar deliberately offers none of those things.
