The best ultra slim sound bar depends on whether you prioritize immersive audio, clear dialogue, or a compact setup. Samsung’s S800D and HW-S801D are best for buyers seeking a low-profile design with 3.1.2-channel audio and Wireless Dolby Atmos. The Samsung S700D offers a slimmer-style alternative with 3.1-channel sound, while the Sony S100F and Polk Signa S2 suit buyers looking for straightforward, space-conscious TV upgrades.
| Sound Bar | Best For | Key Feature |
|---|---|---|
| Samsung S800D | Immersive sound in a slim design | 3.1.2 channels and Wireless Dolby Atmos |
| Samsung HW-S801D | Buyers wanting 3.1.2-channel audio | Ultra-slim profile and Q-Symphony |
| Samsung S700D | Samsung TV owners | 3.1 channels and Q-Symphony |
| Polk Audio Signa S2 | Dialogue clarity and stronger bass | VoiceAdjust and wireless subwoofer |
| Sony S100F | Small rooms and home offices | Compact 2.0-channel setup |
Samsung S800D 3.1.2-Channel Soundbar

The Samsung S800D is best for buyers who want an ultra-slim sound bar with more than basic stereo audio. Its listed 3.1.2-channel configuration and Wireless Dolby Atmos support make it a feature-rich option for compatible home entertainment setups.
- Its low-profile design is intended to blend into a room’s décor.
- Wireless Dolby Atmos is designed to deliver elevated audio without HDMI cables for that feature.
- Q-Symphony pairs the soundbar with a Samsung TV so the speakers can work together.
- Adaptive Sound, SpaceFit Sound Pro, Game Mode Pro, and built-in Alexa are listed features.
Choose this if you want a slim design alongside surround-style audio features. Q-Symphony’s listed pairing benefit applies to Samsung TVs. The product information does not specify exact dimensions, so measure your intended space before buying.
Samsung HW-S801D Ultra-Slim Soundbar

The Samsung HW-S801D is best for shoppers comparing slim 3.1.2-channel soundbars with Wireless Dolby Atmos. Its feature list includes the same major audio and room-integration features as the S800D, making it a direct option to compare within Samsung’s ultra-slim range.
- 3.1.2-channel sound and Wireless Dolby Atmos are listed.
- Q-Symphony is designed to coordinate the soundbar with a Samsung TV.
- SpaceFit Sound Pro, Adaptive Sound, and Game Mode Pro are included features.
- Alexa is built in, according to the product name.
Choose this if you want the listed 3.1.2-channel feature set in an ultra-slim Samsung model. Compare its placement requirements and connections with your TV before deciding; the supplied product details do not list exact measurements or a complete connection specification.
Samsung S700D 3.1-Channel Soundbar

The Samsung S700D is best for buyers who want a low-profile soundbar with 3.1-channel audio rather than the 3.1.2-channel configurations of the S800D and HW-S801D. It retains several features aimed at Samsung TV owners and viewers who want audio modes for different content.
- The ultra-slim design is intended to sit discreetly in a room.
- Wireless Dolby Atmos, Q-Symphony, SpaceFit Sound Pro, and Adaptive Sound are listed.
- Game Mode Pro is included for gaming use.
Choose this if 3.1-channel sound meets your needs and you want Samsung-specific Q-Symphony support. Compared with the two Samsung 3.1.2-channel models in this guide, its listed channel configuration is different. The product details do not provide exact dimensions, so confirm fit before purchase.
Polk Audio Signa S2 Slim Sound Bar

The Polk Audio Signa S2 is best for buyers who want a slim soundbar with a separate wireless subwoofer and dialogue-focused features. Polk lists VoiceAdjust technology, Dolby Digital decoding, and five full-range drivers. The soundbar is described as just over two inches tall.
- VoiceAdjust is designed to improve voice clarity and reduce voice delays.
- The included wireless subwoofer adds a bass component beyond the soundbar alone.
- HDMI, optical, and AUX inputs are listed, along with Bluetooth streaming.
Choose this if you value speech clarity, multiple listed input options, and a separate subwoofer. Avoid it if you specifically want a single-unit system without an additional subwoofer; this package includes one, which requires its own placement space.
Sony S100F Compact 2.0-Channel Soundbar

The Sony S100F is best for small living spaces, home offices, and buyers seeking a simple compact soundbar. Its 2.0-channel setup includes an integrated tweeter and a Bass Reflex speaker, while Bluetooth provides a simple wireless connection option.
- The compact design is positioned for small spaces and home office use.
- A built-in tweeter and Bass Reflex speaker are listed.
- Bluetooth supports a simple connection with compatible devices.
Choose this if ease and compactness matter more than multi-channel audio features. Its listed 2.0-channel configuration is simpler than the Samsung models above, and the product information does not list Dolby Atmos or a separate subwoofer.
Buying Guide: How To Choose An Ultra Slim Sound Bar
How much space do you have?
Check the soundbar’s length, height, and depth against the area in front of or below your TV. A low-profile design may help preserve screen visibility, but “ultra slim” does not establish that every model will fit every stand. The Polk Signa S2 is described as just over two inches tall; the other supplied product details do not give exact dimensions.
Do you want simple stereo or immersive audio?
Compare the listed channel configurations. The Sony S100F is 2.0-channel, the Samsung S700D is 3.1-channel, and the Samsung S800D and HW-S801D are 3.1.2-channel models. The Samsung models list Wireless Dolby Atmos, while the Sony is positioned as a compact, straightforward TV and home-office option.
Is dialogue clarity or bass your priority?
For voice-focused listening, the Polk Signa S2 lists VoiceAdjust technology. For a compact setup with a bass feature, the Sony S100F lists a Bass Reflex speaker. The Polk includes a wireless subwoofer, so account for the additional component and its placement when planning your room.
Which connections and TV features should you check?
Match the soundbar’s connection options to your TV and other devices. Polk lists HDMI, optical, AUX, and Bluetooth; Sony lists Bluetooth in the provided features. Samsung highlights Wireless Dolby Atmos and Q-Symphony, with Q-Symphony designed for pairing with Samsung TVs. Confirm the connection details you need before selecting a model.
Frequently Asked Questions
What is an ultra slim sound bar?
It is a soundbar designed with a low-profile form to fit more discreetly near a TV. Check the exact product dimensions because “ultra slim” alone does not confirm fit.
Which soundbar here is best for a small room?
The Sony S100F is specifically described as compact and suitable for small living spaces and home-office use.
Which models list Wireless Dolby Atmos?
The Samsung S800D, HW-S801D, and S700D list Wireless Dolby Atmos in their supplied features.
Which option includes a wireless subwoofer?
The Polk Audio Signa S2 includes a wireless subwoofer, adding a separate component for bass.
Which model is best for clearer dialogue?
The Polk Signa S2 lists VoiceAdjust technology for voice clarity. Bose TV Speaker also focuses on dialogue, but it is not included here because the five selected products emphasize ultra-slim or compact designs.