Polk Audio Signa S4 vs WiiM Bar Soundbar Comparison

Polk Audio Signa S4 vs WiiM Bar

Polk Audio Signa S4

3.1.2-channel | $449

Check price atAmazon›

Change

WiiM Bar

3.0.2-channel | $479

Check price atAmazon›

Change

Polk Audio Signa S4 vs WiiM Bar: the short answer

We can compare 12 features from the published specs. The WiiM Bar is ahead on 4, the Polk Audio Signa S4 on 3, and 5 are ties. Only the Polk Audio Signa S4 comes with a subwoofer, which matters when comparing the prices.

Reasons to choose Polk Audio Signa S4 over WiiM Bar

HDMI inputs: 1 vs 0
Subwoofer: Included vs Optional
Height: 2.5 in vs 3.31 in

Reasons to choose WiiM Bar over Polk Audio Signa S4

DTS:X: Yes vs No
Rear speakers: Optional vs None
Streaming: Wi-Fi + Google Cast, Spotify Connect vs Bluetooth only
Voice assistant: Alexa built-in, Google Assistant optional vs No

Side-by-Side Comparison

	Polk Audio Signa S4	WiiM Bar
Channel layout Counts speaker channels the bar actually has. More ear-level and height channels means a wider, taller sound field.	3.1.2	3.0.2
Height channels Drivers aimed at the ceiling, which is what makes Dolby Atmos sound overhead rather than just wide.	2	2
Dolby Atmos	Yes	Yes
DTS:X	No	Yes
HDMI to the TV eARC carries lossless Dolby TrueHD and Atmos from the TV; plain ARC compresses them.	eARC	eARC
HDMI inputs A spare HDMI port for a games console or disc player.	1	0
Subwoofer Included beats optional beats none: a separate subwoofer is where deep bass comes from.	Included	Optional
Rear speakers Real rear speakers put effects behind you; without them surround is simulated from the front.	None	Optional
Room correction	No	—
Streaming	Bluetooth only	Wi-Fi + Google Cast, Spotify Connect
Voice assistant Built in, rather than through a separate smart speaker.	No	Alexa built-in, Google Assistant optional
Dialogue enhancement	Yes	Yes
Height Lower is less likely to block the bottom of the TV picture.	2.5 in	3.31 in
Width / suits TVs from Neither is better: match the bar to your TV. See the size simulator below.	41.13 in / 50-inch	41.75 in / 50-inch
Drivers in the bar	7	8
Power (total, as published) Makers rate soundbar power differently, so the totals are not a like-for-like comparison.	—	135 W
Weight	—	11.02 lbs
List price	$449	$479

Green marks the better figure where one is better. Dashes are specs the maker does not publish.

Size: Both Soundbars in Front of a TV

Drawn to scale. The solid bar is the Polk Audio Signa S4, the dashed outline the WiiM Bar. Pick your TV size and how it stands to see whether either would cover the picture.

Full Specifications

Polk Audio Signa S4 Specifications

Sound
Channels	3.1.2
Dolby Atmos	Yes
DTS:X	No
Drivers	Tweeters: 1" Dome (3); Midrange: 2.625" Height Drivers (2); Woofers: 4.75"x1.5" Cone (2); Subwoofer: 5.9375" Cone; Enclosure: Ported
Subwoofer	Included
Rear speakers	None
Virtual surround	Movie Mode
Dialogue enhancement	Yes
Night mode	Yes
Room correction	No
Connections
HDMI to TV	eARC
HDMI inputs	1
HDMI version	2.1
Optical inputs	Yes
Analogue input	3.5mm
USB	No
Subwoofer output	Wireless
HDMI CEC	Yes
Streaming and Control
Wi-Fi	No
Bluetooth	Yes
Voice control	No
Remote included	Yes
Learns TV remote	Yes
Physical
Dimensions (W x H x D)	41.13 x 2.5 x 3.81 in / 1045 x 64 x 97 mm
Subwoofer size	7.88 x 12.94 x 12.81 in (W x H x D)
Wall mounting	Yes (no bracket supplied)
Warranty	1 Year parts, 1 Year labour
List price	$449

Power is the maker's total across all drivers and is not comparable to an amplifier's per-channel rating.

WiiM Bar Specifications

Sound
Channels	3.0.2
Dolby Atmos	Yes
DTS:X	Yes
Drivers	Tweeters: 2" Dome (3); Midrange: 2" Height drivers (2); Woofers: 4.3125"x2.0" Cone (3); Enclosure: Passive Radiator
Power (bar, total)	135 watts
Subwoofer	Optional
Rear speakers	Optional
Virtual surround	Movie Mode
Dialogue enhancement	Yes
Night mode	Yes
Connections
HDMI to TV	eARC
HDMI inputs	0
HDMI version	2.1
Optical inputs	Yes
Analogue input	RCA
USB	USB-A
Subwoofer output	Wireless
HDMI CEC	Yes
Streaming and Control
Wi-Fi	802.11ax
Bluetooth	Yes
Streaming	Google Cast, Spotify Connect, TIDAL, Amazon Music, Pandora, SiriusXM, TuneIn, YouTube Music
Voice control	Alexa built-in, Google Assistant optional
App	Apple iOS, Android
Remote included	Yes
Learns TV remote	No
Physical
Dimensions (W x H x D)	41.75 x 3.31 x 5 in / 1061 x 84 x 127 mm
Weight	11.02 lbs / 5 kg
Wall mounting	Yes (bracket included)
Warranty	1 Year parts, 1 Year labour
List price	$479

Power is the maker's total across all drivers and is not comparable to an amplifier's per-channel rating.

More Soundbar Comparisons

All soundbars ›