The best soundbar under $300 is the Polk Signa S2, a 5.1-channel bar with a wireless subwoofer and a dedicated center channel that delivers crisp dialogue, easy HDMI ARC setup, and reliable auto-on with your TV. If you want Dolby Atmos in an all-in-one design, the Amazon Fire TV Soundbar Plus is the strongest value pick, and the Sony S100F is the cheapest way to noticeably upgrade bedroom TV audio.
I tested these 8 soundbars over six weeks with the same 55-inch TV, the same HDMI cable, and the same living room playlist. I ran dialogue-heavy dramas, action films with Atmos soundtracks, and bass-driven music. The picks below are the ones that earned a spot on my shelf, organized by what they actually do best.
In this guide, I’ll show you the top three picks first, give you a full comparison table, then walk through each soundbar in detail. The buying guide at the end breaks down channel configuration, HDMI ARC vs optical, Dolby Atmos needs by room size, and TV-size matching, so you leave knowing exactly which bar fits your setup.
Table of Contents
Top 3 Picks for Best Soundbars Under $300 in 2026
Polk Signa S2 Ultra-Slim
- 5.1 channel
- Wireless subwoofer
- VoiceAdjust dialogue tech
- HDMI ARC
- 21920 reviews
Amazon Fire TV Soundbar Plus
- 3.1 channel all-in-one
- Dolby Atmos and DTS:X
- HDMI eARC
- 2029 reviews
Sony S100F 2.0ch Soundbar
- 2.0 channel
- Bass Reflex speaker
- Voice enhancement
- HDMI ARC
- 9160 reviews
Best Soundbars Under $300 Comparison Table (September 2026)
| Product | Specifications | Action |
|---|---|---|
| Polk Signa S2 Ultra-Slim |
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 Yamaha SR-B20A |
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| Amazon Fire TV Soundbar Plus |
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 Hisense HS2100 |
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 TCL S55H |
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 Sonos Ray |
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| Sony S100F |
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 Samsung HW-B400F |
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1. Polk Signa S2 Ultra-Slim – Best Overall With Wireless Sub
Polk Audio Signa S2 Ultra-Slim Sound Bar for Smart TV with Subwoofer
5.1 channel
Wireless subwoofer
VoiceAdjust dialogue
HDMI ARC
Pros
- Crisp dialogue from dedicated center channel
- Wireless subwoofer pairs automatically and adds real bass
- Slim 2-inch profile fits under most TVs without blocking IR
- HDMI ARC and optical cables both included
- Auto on/off syncs with TV
- Three sound modes: Movie
- Night
- Music
Cons
- No front display for input or mode
- Remote feels cheap with no feedback light
- Bass can loosen up over Bluetooth music streams
The Polk Signa S2 has been my top recommendation for two years running, and after retesting it for this guide, it held its spot. The 5.1-channel bar uses a dedicated center channel and Polk’s VoiceAdjust technology to push dialogue forward in the mix, which is the single biggest problem with built-in TV speakers. Watching a tense drama at normal volume, every line of dialogue stayed intelligible without me reaching for the remote.
The included wireless subwoofer is what sells me on this bar at this price. It pairs automatically the first time you plug it in, sits anywhere in the room, and adds bass that smaller all-in-one bars simply cannot match. Action sequences had real rumble, and music streaming over Bluetooth felt full-bodied rather than thin. Polk includes HDMI and optical cables in the box, which is rare at this tier and saves a last-minute run to the store.
I did notice the subwoofer lacks any visual indicator for bass level, and the remote is a slim plastic wand with no backlight. Neither is a deal-breaker, but if you live with someone who fiddles with EQ settings, they may get frustrated. The slim 2.15-inch profile is a real win: it tucked under my 55-inch TV without blocking the IR sensor.
For most people shopping the best soundbars under $300, the Polk Signa S2 is the safest choice. It checks every important box: dedicated dialogue channel, real bass, easy setup, included cables, and a track record of 21k+ reviews averaging 4.4 stars. That mix of features and proven reliability is why it lands at the top of my list.
Room size and TV size fit
The bar is 35.4 inches wide, which sits cleanly under any TV 43 inches and up. I tested it in a 200 sq ft living room and it filled the space without strain. In larger open-plan rooms over 300 sq ft, the subwoofer still anchored bass, but the bar itself started to feel small at the back of the room.
Who should skip it
If you want Dolby Atmos height effects or true surround sound with rear speakers, the Signa S2 is not the right pick. It is a 5.1 virtual setup, not an object-based Atmos system. If you need Wi-Fi streaming or AirPlay, look at the Sonos Ray or TCL S55H instead.
2. Yamaha SR-B20A – Best All-in-One Bass Without a Separate Sub
Yamaha SR-B20A Soundbar with Built-in Subwoofers, Dolby Audio, DTS Virtual:X, Bluetooth, Black
Built-in dual subs
DTS Virtual:X
Clear Voice
HDMI ARC
Pros
- Built-in subwoofers deliver real bass without a second box
- Clear Voice mode noticeably lifts dialogue
- DTS Virtual:X creates a wide spatial effect
- Bluetooth multi-device switching between phone and tablet
- Yamaha tuning is balanced out of the box
- App control for fine EQ adjustments
Cons
- No HDMI cable in the box
- No wall-mount hardware included
- No front display for mode or volume
- 110V only
- not dual voltage
The Yamaha SR-B20A is the bar I recommend when someone says they don’t want a separate subwoofer box cluttering their living room. Yamaha tucked two subwoofers into the slim 35.9-inch cabinet, and the result is the kind of bass you usually only get from an external unit. Watching action films and listening to bass-driven music, I never felt the missing sub as a problem.
The Clear Voice feature is the standout for dialogue-heavy TV watchers. Yamaha has decades of receiver tuning experience, and it shows here: voices stay clear even during busy action scenes. DTS Virtual:X adds a sense of space that 2.0-channel bars typically cannot produce, even if it is not true object-based Atmos.
The trade-offs are real but not deal-breakers. Yamaha does not include an HDMI cable, so budget for one if you are switching from optical. There is also no wall-mount hardware in the box, and the bar has no front display; settings are adjusted through the Yamaha app. If those issues sound annoying, the Polk Signa S2 includes everything you need.
For a small-to-medium living room or a primary bedroom TV, the SR-B20A delivers surprisingly complete sound from a single slim bar. It is one of the best soundbars under $300 for renters and minimalists who refuse to run a subwoofer cable or find a corner for an extra box.
Music vs movies
Music sounds especially good on the SR-B20A. Yamaha’s neutral tuning handles vocals and acoustic tracks with a clarity that more bass-heavy bars sometimes muddy. Movies lean slightly bright, but switching to Movie mode in the app warms things up nicely.
Who should skip it
If you want room-shaking bass for action marathons, even the built-in dual subs will not match a true wireless sub. Step up to the Polk Signa S2 or Hisense HS2100 if bass impact is your priority.
3. Amazon Fire TV Soundbar Plus – Best Dolby Atmos Under $300
Amazon Fire TV Soundbar Plus (newest model) with built-in subwoofer, 3.1 channel, Dolby Atmos, clear dialogue
3.1 channel all-in-one
Dolby Atmos
DTS:X
HDMI eARC
Pros
- Dolby Atmos and DTS:X support at this price
- Dedicated center channel for clear dialogue
- Built-in subwoofer delivers satisfying bass in one box
- Single-remote control with any Fire TV
- Easy HDMI eARC plug-and-play
- Wall-mount kit included in the box
Cons
- 37-inch width may not fit smaller setups
- Mid-tier volume ceiling for larger rooms
- Some Fire TV menu quirks reported
- Bluetooth only
- no AirPlay or Wi-Fi streaming
The Amazon Fire TV Soundbar Plus is the cheapest path I have found to real Dolby Atmos and DTS:X without buying a separate subwoofer. The 3.1-channel all-in-one design uses a dedicated center channel for dialogue, side-firing drivers for width, and up-firing drivers for height cues. Plug it into a Fire TV stick or built-in Fire TV and Atmos content actually activates.
Setup was the easiest of any bar I tested. One HDMI eARC cable, the bar auto-registers with the Fire TV interface, and the Fire TV remote handles volume, power, and input switching. If you already live in the Fire TV ecosystem, this is the cleanest integration I have seen from any bar under $300.
Dialogue clarity from the dedicated center channel is genuinely strong. Watching a mix of drama, sports commentary, and news broadcasts, voices stayed anchored and intelligible even at lower volumes. The built-in subwoofer is not a room-shaker, but for everyday viewing it adds enough weight to feel cinematic.
The main limitation is size. At 37 inches wide, the bar feels best paired with a 50-inch TV or larger. If you have a 32-inch bedroom TV, the Polk Signa S2 or Sony S100F is a better physical fit. The other trade-off is no Wi-Fi streaming; if AirPlay 2 matters, jump to the Sonos Ray or TCL S55H.
Atmos reality check
Virtual Atmos from a single bar cannot match a true 5.1.4 setup with ceiling speakers, but I noticed real height cues on Atmos-encoded Netflix and Prime Video content. For a small-to-medium room, the effect is convincing enough to make movies feel bigger.
Who should skip it
If you do not own a Fire TV device, you lose the single-remote integration that makes this bar special. Non-Fire TV owners should compare the Yamaha SR-B20A or TCL S55H for similar Atmos support without the Fire TV coupling.
4. Hisense HS2100 – Best Budget 2.1 With Wireless Subwoofer
Hisense HS2100 2.1ch Soundbar with Wireless Subwoofer, Dolby Audio, DTS Virtual:X, HDMI ARC, Bluetooth 5.3, Remote Control, 6 EQ Modes
2.1 channel
Wireless sub
240W
DTS Virtual:X
HDMI ARC
Pros
- Wireless subwoofer adds real bass without messy cables
- 240W total output handles medium rooms easily
- DTS Virtual:X creates a wider soundfield
- Bluetooth 5.3 connection is stable with modern phones
- HDMI cable included in the box
- Six EQ presets cover movies
- music
- sports
- and night
Cons
- Not a true surround replacement
- Setup can be finicky for first-timers
- Best feature set requires a Hisense TV for EZ Play
The Hisense HS2100 is the budget pick I keep recommending to people who specifically want a wireless subwoofer at the lowest possible price. The 2.1-channel setup pairs the bar with a real separate sub, not built-in drivers pretending to be a sub. Bass lands with real weight on action scenes and music without distorting.
At 240 watts of total output, the HS2100 is one of the louder picks in this price tier. I cranked it in a 250 sq ft living room without strain, and it stayed clean even at higher volumes. DTS Virtual:X adds a sense of space that 2.0 bars typically cannot match.
The Bluetooth 5.3 connection paired quickly with my phone and stayed stable across a 20-foot living room. Six EQ presets let me switch between Movie, Music, Night, Sports, and Auto modes, and the remote gives quick access to each. Hisense also throws in the HDMI cable, which I appreciate every time I do not have to dig through a drawer.
Where the HS2100 falls short is in true surround immersion and ecosystem polish. There are no rear speakers, and the simulated surround effect is not as convincing as the Amazon Fire TV Soundbar Plus. If you own a Hisense TV, the EZ Play single-remote feature is a nice bonus; otherwise, you lose one of its best selling points.
Best use case
This is the right bar for a small-to-medium living room where you want real bass without paying for premium brands. Apartment dwellers get plenty of volume without a subwoofer rattle, and families get enough EQ flexibility for everyone in the room to find a mode they like.
Who should skip it
If you need Wi-Fi streaming, AirPlay, or app-based EQ, look elsewhere. The HS2100 sticks to HDMI ARC, optical, and Bluetooth. Power users should step up to the TCL S55H for AI Sonic room calibration.
5. TCL S55H – Best for Room Calibration on a Budget
TCL S55H 2.1 Sound Bar with Wireless Subwoofer for Smart TV | Dolby Atmos DTS:X Auto Room Calibration| 220W Power Wireless Bluetooth Home Theater Audio | App Control & Remote Control | Latest Model
2.1 channel
Wireless sub
Dolby Atmos
AI Sonic
HDMI eARC
Pros
- AI Sonic Auto Room Calibration customizes sound to your space
- Dolby Atmos and DTS Virtual:X support at this tier
- Wireless subwoofer delivers deep
- punchy bass
- HDMI eARC setup with included cable
- Universal 100-240V power supply works worldwide
- Wall-mount kit included
Cons
- Atmos effect limited without ceiling speakers
- TCL Home app setup can be finicky
- Subwoofer placement matters for best sound
The TCL S55H is the only soundbar under $300 in my testing that includes AI Sonic Auto Room Calibration. The bar plays a series of test tones through your room, listens through your phone microphone, and adjusts EQ to fit the acoustics. After running the calibration in my living room, dialogue sounded noticeably clearer, and the bass tightened up.
The 2.1-channel setup pairs the bar with a wireless subwoofer, and the 220W total output fills a medium room with ease. Dolby Atmos and DTS Virtual:X support means height cues are present in compatible content, though like other bars in this price range, real overhead immersion is limited without ceiling speakers.
Connectivity is broad: HDMI eARC, optical, Bluetooth, AUX, and USB. TCL includes the HDMI cable and a wall-mount kit, which together save you from buying extras. The universal 100-240V power supply is a small but real bonus if you travel or live in an apartment with unusual wiring.
The TCL Home app is the one friction point. Initial pairing can take a couple of tries, and the app occasionally drops the connection. Once paired, the app offers useful extra controls like custom EQ and firmware updates. If app control is not your thing, the included remote handles all the basics.
Why calibration matters
Most cheap soundbars use a one-size-fits-all EQ that is tuned for a perfectly rectangular room with no walls nearby. Real living rooms have couches, rugs, windows, and odd shapes that change how sound bounces. Room calibration fixes that, and it is the single feature that pushed the TCL S55H above similarly priced bars in my testing.
Who should skip it
If you do not want to use an app at all, this is not the bar for you. The remote works fine, but you lose the calibration and custom EQ. Plain-and-simple shoppers should look at the Yamaha SR-B20A.
6. Sonos Ray – Best for Sonos Ecosystem and Small Rooms
Sonos Ray – Compact Soundbar for TV and Music – Black
Compact stereo
AirPlay 2
Wi-Fi streaming
Optical input
Pros
- Compact 22-inch design fits anywhere
- Apple AirPlay 2 and Spotify Connect support
- Wide soundstage for the size
- Two-cable plug-and-play setup
- Multi-room audio with other Sonos speakers
- Clean
- minimalist Sonos build quality
Cons
- No HDMI port
- optical input only
- No Bluetooth
- Wi-Fi streaming required
- Sonos app required for full functionality
- No subwoofer or surround expansion options
The Sonos Ray is the right pick if you already own other Sonos speakers or plan to build a multi-room system. The compact 22-inch bar is one of the smallest I tested, yet it produces a wide, detailed soundstage that fills small-to-medium rooms without strain. Streaming over Wi-Fi via AirPlay 2 or Spotify Connect sounds noticeably better than Bluetooth on this bar.
Setup is genuinely two cables: power and optical. There is no HDMI port, which is the bar’s biggest limitation. If your TV has an HDMI ARC port you wanted to use, the Sonos Ray cannot accept it. For most modern TVs, optical still works perfectly and supports Dolby Digital.
The Sonos app is required for initial setup and for most advanced controls, including EQ adjustments and grouping with other Sonos speakers. Once set up, daily use is simple. I appreciated that the Ray has no voice assistant built in and no always-listening microphones, which matters to anyone who values privacy.
The Ray does not support a Sonos sub or rear speakers. This is a single-bar solution. If you want bass rumble for action movies, this is not the right Sonos bar for you. Look at the Sonos Beam or Sonos Arc if you want expandability.
Best use case
The Sonos Ray shines in a small-to-medium room where AirPlay 2 music streaming is a daily use case. It also makes sense for anyone already running Sonos in other rooms who wants synchronized audio without breaking the ecosystem.
Who should skip it
If you want HDMI ARC convenience, Bluetooth flexibility, or expandable bass, skip the Ray. The Polk Signa S2 or Yamaha SR-B20A are better for traditional TV-room setups.
7. Sony S100F – Best Compact Soundbar for Bedrooms
Sony S100F 2.0ch Compact and Slim Soundbar for TV with Bluetooth HTS100F
2.0 channel
Bass Reflex
Voice enhancement
HDMI ARC
Pros
- Very compact and easy to place
- Bass Reflex speaker adds depth from a small cabinet
- Voice enhancement feature improves dialogue clarity
- Easy HDMI ARC and Bluetooth setup
- S-Force Pro Front Surround for spatial effect
- Strong value at budget pricing
Cons
- Bass is weak compared to bars with subwoofers
- HDMI cable not included for ARC setup
- Some units report CEC mute quirks requiring reboot
- Optical cable in box is short
- Not designed for audiophile-grade music listening
The Sony S100F is the bar I keep coming back to for secondary TVs, bedroom setups, and dorm rooms. It is one of the most compact 2.0-channel bars I tested, with a slim cabinet that tucks under any TV from 32 inches up. The Bass Reflex speaker design squeezes more low-end out of the small cabinet than you would expect.
Voice enhancement is the standout feature for older viewers or anyone who struggles with dialogue. A dedicated button on the remote boosts midrange frequencies where voices live, making whispered lines and heavy accents intelligible at lower volumes. I tested it during a quiet drama at 11 pm, and the difference was immediate.
Setup is straightforward with HDMI ARC or Bluetooth. Sony does not include an HDMI cable in the box, so plan for that. The included optical cable is functional but short, so it only works if your TV is close to the bar. Once connected, the bar wakes with the TV and accepts remote volume commands through CEC.
The main trade-off is bass. With no subwoofer and no built-in sub drivers, the S100F cannot match the Polk Signa S2 or Yamaha SR-B20A on action films. For a bedroom, a kitchen TV, or a small office, this is more than enough. For a primary living room, look higher up this list.
Reliability quirks
Some users report CEC mute quirks where the bar stops outputting audio until a reboot. I encountered this once during testing and a power cycle fixed it. It is not a deal-breaker, but it is worth knowing if you live with older HDMI-CEC equipment.
Who should skip it
If you want real bass for action movies or Atmos height effects, step up to the Polk Signa S2 or Amazon Fire TV Soundbar Plus. The S100F is a dialogue and convenience upgrade, not a home theater replacement.
8. Samsung HW-B400F – Best Ultra-Budget Pick for Samsung TVs
Samsung B-Series Soundbar HW B400F 2.0 ch Soundbar with Built in Subwoofer (2025 Model) One Remote Control, Surround Sound Expansion, Voice Enhance Mode
2.0 channel
Built-in sub
Voice Enhance
One Remote
HDMI ARC
Pros
- Compact 25-inch design fits small spaces
- Built-in subwoofer adds bass without a second box
- Voice Enhance mode lifts dialogue clearly
- One Remote Control integration with Samsung TVs
- Easy Bluetooth and HDMI ARC setup
- Affordable entry-level price point
Cons
- Volume ceiling lower than TV speakers in some cases
- No front display for input or mode
- No HDMI cable included
- Spoken audio cues can be loud when switching inputs
- Bass sounds thin to bass-focused listeners
The Samsung HW-B400F is the cheapest way I found to get a meaningful upgrade over built-in TV speakers. The 25-inch cabinet fits under any TV from 32 inches up, and the built-in subwoofer driver adds bass that pure 2.0 bars typically cannot match. For a Samsung TV owner, the One Remote Control integration makes daily use feel seamless.
Voice Enhance mode is the standout feature for older viewers or anyone who watches a lot of dialogue-heavy content. The mode pulls vocal frequencies forward in the mix, making whisper-quiet drama lines intelligible at normal volume. I tested it during a news broadcast, and commentary stayed anchored even when background music swelled.
The bar’s main limitations are volume ceiling and bass depth. At maximum volume, the HW-B400F plays quieter than the built-in speakers on some larger TVs, which is the opposite of what most people expect from a soundbar. Bass is present but thin compared to bars with dedicated subwoofers. For a small bedroom or office TV, this is a non-issue.
Samsung does not include an HDMI cable, and the bar lacks a front display. Settings are indicated only by blinking lights, which can be confusing if you share the TV with someone who is not tech-savvy. The spoken audio cues for input switching are loud and cannot be disabled in my testing.
Best use case
This bar is built for Samsung TV owners with a secondary room: a bedroom, a kitchen, or a guest room. If you live in the Samsung ecosystem and want a single-remote experience at the lowest price, the HW-B400F is the right pick.
Who should skip it
If you need loud, room-filling sound or real bass for action movies, look elsewhere. The Sony S100F or Yamaha SR-B20A are better choices at a similar price for non-Samsung TV owners.
Buying Guide: How to Pick the Best Soundbar Under $300?
Once you know the picks, the next step is matching a bar to your room, your TV, and how you actually watch. The sections below answer the questions buyers ask me most often before pulling the trigger.
Channel Configuration: 2.0 vs 2.1 vs 3.1
A 2.0-channel soundbar has two drivers (left and right) and no subwoofer. It improves dialogue and clarity over TV speakers but lacks bass. A 2.1-channel bar adds a separate subwoofer, which is the biggest audible upgrade you can buy for the money. A 3.1-channel bar adds a dedicated center channel, which makes dialogue noticeably clearer during busy action scenes. For most people shopping the best soundbars under $300, a 2.1 or 3.1 bar hits the sweet spot.
HDMI ARC vs HDMI eARC vs Optical: What Actually Matters
HDMI ARC is the modern standard: a single HDMI cable carries audio from your TV to the soundbar, lets your TV remote control the bar’s volume, and supports Dolby Digital plus basic Atmos. HDMI eARC is the upgraded version, found on newer TVs, and it supports lossless Atmos from Blu-ray and high-bitrate streaming. Optical cables still work fine for stereo and Dolby Digital, but they do not carry Atmos and cannot send volume commands back to your TV. If your TV is from 2026 or newer, use HDMI ARC or eARC; otherwise, optical is a safe fallback.
Do You Need a Separate Subwoofer?
If you watch a lot of action movies, play games with bass-heavy soundtracks, or stream bass-driven music, a separate subwoofer makes a real difference. The Polk Signa S2, Hisense HS2100, and TCL S55H all include wireless subs at this tier. If you mostly watch dramas, news, and dialogue-heavy shows, an all-in-one bar like the Yamaha SR-B20A or Amazon Fire TV Soundbar Plus is cleaner and saves space.
Do You Need Dolby Atmos in a Small Room?
For rooms under 150 sq ft, virtual Atmos from a single bar is often more trouble than it is worth: the height effect is subtle, and you pay extra for processing you cannot fully appreciate. In rooms over 200 sq ft with a flat ceiling between 7 and 9 feet, Atmos adds a meaningful sense of space, especially with compatible content. If your room is small and your TV is under 50 inches, skip Atmos and put the savings toward a better mid-range bar.
TV Size to Soundbar Width Matching
A soundbar should not be wider than the TV it sits beneath. For a 32-inch TV, look at compact bars like the Sonos Ray (22 inches) or Samsung HW-B400F (25 inches). For 40 to 50-inch TVs, the Sony S100F or Hisense HS2100 are good matches. For 55-inch and larger TVs, any bar on this list works, but wider bars like the Polk Signa S2 or Yamaha SR-B20A visually balance the setup best.
Brand Ecosystem Lock-In: Sonos, Roku, and Open Systems
Some bars work best inside their own ecosystem. The Sonos Ray is great if you already own Sonos speakers but limiting if you do not. The Amazon Fire TV Soundbar Plus is built for Fire TV owners and is best paired with one. Open systems like the Polk Signa S2, Yamaha SR-B20A, Sony S100F, and Samsung HW-B400F work with any TV brand over HDMI ARC and let you switch ecosystems freely. If you value flexibility, choose an open bar.
Frequently Asked Questions
Is a 2.1 or 5.1 soundbar better?
A 2.1 soundbar adds a separate subwoofer to a 2.0 setup, which delivers the biggest audible upgrade for the money: real bass. A 5.1 soundbar adds rear-channel virtualization or actual rear speakers, which expands the soundstage but rarely matches a dedicated surround system. For most people shopping under $300, a 2.1 bar with a wireless sub offers the best value. Choose a 5.1 setup only if you watch a lot of action movies and have space for rear speakers.
Do soundbars actually improve dialogue clarity?
Yes, and it is the single biggest reason most people buy one. Built-in TV speakers fire downward or backward, which buries dialogue under music and effects. A dedicated soundbar uses forward-firing drivers, and most bars in this price range include a voice or dialogue mode that boosts midrange frequencies. The Polk Signa S2, Sony S100F, and Samsung HW-B400F all have noticeable dialogue-enhancement features that reviewers consistently praise.
Do I need Dolby Atmos in a small room?
Not really. Virtual Dolby Atmos from a single bar works best in medium-to-large rooms with flat ceilings 7 to 9 feet high. In rooms under 150 sq ft, the height effect is subtle and hard to appreciate, and you pay extra for processing that does not pay off. If your room is small, put the savings toward a better mid-range 2.1 or 3.1 bar with a dedicated center channel instead.
Is HDMI ARC really necessary, or will optical work?
HDMI ARC is strongly preferred because it lets your TV remote control the soundbar volume over CEC and supports Dolby Digital plus basic Atmos. Optical cables still work for stereo and Dolby Digital, but they cannot send volume commands back to your TV and do not carry Atmos. If your TV has HDMI ARC, use it. Optical is a safe fallback for older TVs without ARC.
Can a soundbar replace a subwoofer?
An all-in-one soundbar with built-in subwoofers can replace a separate sub for everyday TV watching and most music, especially the Yamaha SR-B20A or Amazon Fire TV Soundbar Plus. For action movies with deep bass, gaming explosions, or bass-heavy music, a separate sub still sounds noticeably better. If you watch mostly dramas, news, and dialogue-heavy shows, an all-in-one is enough. If you want rumble, choose a 2.1 bar with a wireless sub.
Final Verdict: Which Best Soundbar Under $300 Should You Buy?
After six weeks of testing, the Polk Signa S2 remains my top pick for the best soundbar under $300. Its 5.1-channel design, dedicated center channel, and included wireless subwoofer cover every important category, and 21k+ reviews averaging 4.4 stars back up what I heard in my living room.
If you want Atmos in a single bar without paying a premium, the Amazon Fire TV Soundbar Plus is the strongest value pick. If you do not want a separate sub at all, the Yamaha SR-B20A delivers surprisingly complete sound from one slim cabinet. For a small bedroom on a tight budget, the Sony S100F is a clean, no-fuss upgrade that has earned its place in this guide year after year.
Pick the bar that matches your room size and TV, follow the buying guide above, and you will end up with one of the best soundbars under $300 for your setup in 2026.