Head-to-head · Best Soundbars Under $300

Polk Audio Signa S4 vs Samsung HW-B750D

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

Samsung HW-B750D comes out ahead by a narrow margin (4.5 vs 4.6). The gap is mostly about TV-room upgrades where a true 5.1 setup and a wireless subwoofer matter more than authentic Dolby Atmos — read the strengths below before deciding.

Ranked #2 in Best Soundbars Under $300

Polk Audio Signa S4

4.5

$300

The Signa S4 is the Dolby Atmos pick at this price tier. Two real upfiring speakers create height effects that DTS Virtual:X (Samsung HW-B750D) and Yamaha SR-B40A can only virtualize. The 3.1.2 channel layout with wireless sub is a step up from 2.1 competitors in this lineup. The catch: MSRP is $399, but it routinely sells for $250-300 on sale — which is when it becomes the obvious pick.

Strengths

— Real Dolby Atmos with two upfiring height channels — only Atmos-certified pick in this round-up
— 3.1.2 channel configuration with wireless subwoofer included
— Polk VoiceAdjust technology brings dialog forward — best speech clarity in this lineup

Watch-outs

— MSRP of $399 — only fits under $300 on sale (frequently does)
— Bluetooth only — no Wi-Fi, AirPlay, or Chromecast like the Polk MagniFi Max
— Smaller subwoofer (5.9") than the Samsung HW-B750D

$300 · Check Price on Amazon Full review →

Higher ratedRanked #1 in Best Soundbars Under $300

Samsung HW-B750D

4.6

$280

The HW-B750D is RTINGS' top pick for under-$300 in 2026, and it earns it by being the only legit 5.1 system at this price tier. The wireless subwoofer and side-firing channels create a wider soundstage than 2.1 competitors can virtualize, and the Bass Boost and Adaptive Sound modes adapt the EQ to whatever you're playing. Trade-off: no native Dolby Atmos — but at $280 with a subwoofer included, that's a fair trade.

Strengths

— 5.1 channel system with wireless subwoofer included — only true 5.1 setup in this round-up
— Side-firing speakers widen the soundstage beyond what 2.1 competitors deliver
— DTS Virtual:X processing creates pseudo-height channels without upfiring drivers

Watch-outs

— No true Dolby Atmos decoding — relies on DTS Virtual:X virtualization
— Wireless subwoofer occasionally drops connection in larger rooms
— Build feels less premium than the Polk Audio Signa S4

$280 · Check Price on Amazon Full review →

How they stack up

Polk Audio Signa S4

Only real Dolby Atmos pick here. Beats the Samsung HW-B750D, Yamaha SR-B40A, Polk Audio Signa S2, and Vizio M-Series 5.1 on Atmos certification. Loses to the Samsung HW-B750D on channel count (3.1.2 vs 5.1). Polk VoiceAdjust gives it the dialog-clarity edge.

Samsung HW-B750D

Only true 5.1 system in this lineup. Beats the Polk Audio Signa S4, Yamaha SR-B40A, Polk Audio Signa S2, and Vizio M-Series 5.1 on side-channel width but loses to the Signa S4 on real Dolby Atmos support. Closest competitor on price-per-channel-count is the Vizio M-Series 5.1.

Specs side-by-side

Spec	Polk Audio Signa S4	Samsung HW-B750D
Channels	3.1.2 (with upfiring)	5.1
Subwoofer	Wireless 5.9" included	Wireless included
Audio Formats	Dolby Atmos, Dolby Digital	Dolby Digital, DTS Virtual:X
Connectivity	HDMI eARC, Optical, Bluetooth	HDMI ARC, Optical, Bluetooth
Dialog Tech	VoiceAdjust	—
Side-Firing Speakers	—	Yes

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