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
- +Slim 2.36-inch profile fits under TVs without blocking IR sensors
- +Tom's Guide and Sound & Vision both rate it 4+ stars
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
- −Single HDMI eARC input — needs an external switch for multi-device setups
How it compares
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.
Who this is for
At a glance: movie watchers who want true Dolby Atmos height effects and best-in-class dialog clarity without paying $500+.
Why you’d buy the Polk Audio Signa S4
- 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.
Why you’d skip it
- 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.
Rating sources
“Polk Audio Signa S4 soundbar review.”
“Polk Audio Signa S4 Soundbar Review.”
Our 4.5 score is the average of these published ratings. More about methodology.
