Head-to-head · Best Soundbars Under $300

Polk Audio Signa S2 vs Sony HT-S100F

Which is the better buy? Side-by-side on rating, price, strengths, and watch-outs — with the published ratings we averaged to get there.

The short answer

Polk Audio Signa S2 comes out ahead by a narrow margin (4.1 vs 4.0). The gap is mostly about Viewers who want noticeably clearer dialogue and added bass from a slim, simple 2.1 bar around $200. — read the strengths below before deciding.

Higher ratedRanked #3 in Best Soundbars Under $300

Polk Audio Signa S2

4.1

$249as of May 29

The Polk Audio Signa S2 is a 2.1 soundbar-and-subwoofer system that built its reputation on dialogue clarity. Polk's VoiceAdjust feature lets you raise speech several levels independently of the rest of the mix, which reviewers credit as a standout for anyone who struggles to follow movie dialogue. The included wireless subwoofer fills in bass, and the slim bar disappears in front of a TV. It is not an Atmos or true-surround system, and its V-shaped tuning favors movies over critical music listening, but as a clean, affordable TV-sound upgrade it remains a budget staple.

Strengths

— Polk's VoiceAdjust technology offers multiple levels of dialogue enhancement for clearer speech
— Included wireless subwoofer adds real low-end without extra setup
— Ultra-slim 2-inch-tall bar fits in front of almost any TV and wall-mounts easily

Watch-outs

— No Dolby Atmos and no dedicated center or rear channels
— V-shaped tuning can sound boomy or bright, making it less ideal for music
— Sub-bass lacks the satisfying deep thump of larger systems

$249 · Check Price on Amazon Full review →

Ranked #4 in Best Soundbars Under $300

Sony HT-S100F

4.0

$99as of May 28

The Sony HT-S100F is a 2.0 single-bar soundbar that delivers a clean, dialogue-focused upgrade over built-in TV speakers for around $99. Reviewers consistently praise its crisp, clear voices and easy setup, making it a favorite for bedrooms, offices, and dialogue-heavy TV watching. With no separate subwoofer it can't reproduce deep movie rumble, and it skips Atmos and DTS, so it is best seen as an affordable clarity-and-convenience bar rather than a home-theater centerpiece.

Strengths

— Excellent dialogue clarity that makes speech crisp and easy to follow
— Compact single-bar design that fits small spaces, desks, and bedrooms
— Around $99, one of the cheapest brand-name upgrades over TV speakers

Watch-outs

— 2.0 configuration with no dedicated or external subwoofer
— Limited deep bass means action movies lack low rumble
— No Dolby Atmos or DTS decoding

$99 · Check Price on Amazon Full review →

How they stack up

Polk Audio Signa S2

Like the Sony HT-S100F, the Signa S2 is a front-only system rather than a true surround rig such as the Vizio M-Series M51ax-J6 or Vizio V-Series V51x-J6, but it splits the difference by bundling a separate wireless subwoofer the Sony and Hisense lack, and its VoiceAdjust dialogue feature is the clearest-speaking bar in this group.

Sony HT-S100F

The HT-S100F is the most compact and least expensive bar here; unlike the Polk Audio Signa S2 it omits a separate subwoofer, and unlike the Vizio M-Series M51ax-J6 and Vizio V-Series V51x-J6 it has no rear channels, sitting closest to the comparable budget soundbars as a dialogue-first single-box upgrade.

Specs side-by-side

Spec	Polk Audio Signa S2	Sony HT-S100F
Channels	2.1	2.0
Subwoofer	Wireless, 5.25-inch driver	None (built-in bass reflex)
Dialogue Tech	VoiceAdjust (multi-level)	—
Bar Height	2 inches	—
HDMI	ARC	ARC
Connectivity	Bluetooth, optical, aux	Bluetooth, optical, USB
Drivers	Two 1.25-inch mid, two 1-inch tweeters	—
Atmos / DTS:X	No	No
Surround	—	S-Force Front Surround
Max Volume	—	95.9 dB
Form Factor	—	Single compact bar

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