Soundbars / Compare

Polk Audio Signa S2 vs Yamaha SR-B40A

A

Product A: Polk Audio

Signa S2

53 of 98 known

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B

Product B: Yamaha

SR-B40A

49 of 98 known

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All 98 fields

Every value links to where we found it.

Only differences

APolk Audio Signa S2

BYamaha SR-B40A

Audio system

10 of 17 differ

System channel configurationiMaker-stated channel layout of the exact package, such as 5.1.2. This can include virtual channels. It is not a count of physical drivers. Optional speakers do not count.

2.17Retailer pagegreentoe.com/product/Polk_Audio_Polk_Audio_Signa_S2_2-1-Channel_Soundbar_System_AM6214-ARead 16 October 2026Retailer table lists channel configuration 2.1-channel for model AM6214-A. Polk states no channel layout. The layout fits one bar array and one subwoofer.

Not available

Physical drivers in the packageiCount of physical active speaker drivers across the supplied bar, subwoofer and rear speakers. Passive radiators, microphones and virtual channels do not count. A coaxial driver, such as KEF Uni-Q, counts once, as makers count it.

52Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw53444bb5/downloads/signa-s2-infosheet-en.pdfRead 16 October 2026Four drivers in the bar plus one woofer in the subwoofer, from the driver list.

73Owner's manualusa.yamaha.com/files/download/other_assets/8/1624438/web_AV23-0002_SR-B40A_ug_UABGRIN_En_B0.pdfRead 13 October 2026

Physical drivers in the bariCount of physical active speaker drivers in the soundbar alone. Passive radiators and virtual channels do not count. A coaxial driver, such as KEF Uni-Q, counts once, as makers count it.

42Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw53444bb5/downloads/signa-s2-infosheet-en.pdfRead 16 October 2026

63Owner's manualusa.yamaha.com/files/download/other_assets/8/1624438/web_AV23-0002_SR-B40A_ug_UABGRIN_En_B0.pdfRead 13 October 2026

Up-firing drivers in the packageiPhysical active drivers explicitly firing upwards across the supplied package. Virtual height channels and passive radiators do not count. A driver that fires upwards only when the bar is wall mounted is not counted.

02Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw53444bb5/downloads/signa-s2-infosheet-en.pdfRead 16 October 2026No driver is described as up-firing. The page lists the bar drivers as a front array.

Not available

Driver layoutiPublished physical driver layout for the supplied components. A row names one driver type in one component. Do not translate channel count into driver count.

APolk Audio Signa S2

Component	Driver type	Count	Diameter (mm)	Orientation
Soundbar	Full-range oval driver, 32 × 112 mm	2	Not available	Front array
Soundbar	Tweeter	2	25	Not available
Subwoofer	Woofer	1	133.35	Not available

Source2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw53444bb5/downloads/signa-s2-infosheet-en.pdfRead 16 October 2026Two 1.25 x 4.4 in (32 x 112 mm) full-range oval drivers and two 1 in (25 mm) tweeters in the bar. One 5.25 in woofer in the subwoofer. The product page calls the oval drivers midrange and lists them as the front array.

BYamaha SR-B40A

Component	Driver type	Count	Diameter (mm)
Soundbar	Full-range cone (front left and right)	4	46
Soundbar	Dome tweeter	2	25
Subwoofer	Cone woofer	1	160

Source3Owner's manualusa.yamaha.com/files/download/other_assets/8/1624438/web_AV23-0002_SR-B40A_ug_UABGRIN_En_B0.pdfRead 13 October 2026Specifications: sound bar front L/R 4.6 cm cone x 4 and 2.5 cm dome tweeter x 2. Subwoofer 16 cm cone x 1, bass reflex. Converted from the published cm.

Separate subwoofer includediA separate powered subwoofer is supplied with the reference package. A built-in woofer does not count.

Yes2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw53444bb5/downloads/signa-s2-infosheet-en.pdfRead 16 October 2026

Yes3Owner's manualusa.yamaha.com/files/download/other_assets/8/1624438/web_AV23-0002_SR-B40A_ug_UABGRIN_En_B0.pdfRead 13 October 2026

Included subwoofer connectioniAudio link used by the supplied separate subwoofer. Wireless subwoofers can still require an AC power cable.

Wireless2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw53444bb5/downloads/signa-s2-infosheet-en.pdfRead 16 October 2026

Wireless3Owner's manualusa.yamaha.com/files/download/other_assets/8/1624438/web_AV23-0002_SR-B40A_ug_UABGRIN_En_B0.pdfRead 13 October 2026

Included subwoofer driver diameteriPublished diameter of an active driver in the supplied separate subwoofer. Do not use enclosure size or passive radiator size.

133.35mm2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw53444bb5/downloads/signa-s2-infosheet-en.pdfRead 16 October 2026The infosheet says 5.25 in (165 mm). The product page says 5.25 in / 13.34 cm and the retailer table says 5.25 in / 13.34 cm. 5.25 in is exactly 133.35 mm. The 165 mm figure matches no 5.25 in driver and is not used.

160mm3Owner's manualusa.yamaha.com/files/download/other_assets/8/1624438/web_AV23-0002_SR-B40A_ug_UABGRIN_En_B0.pdfRead 13 October 2026

Rear speakers includediCount of separate rear speaker enclosures supplied with the reference package. Detachable bar ends count when usable as rears. Optional rear speakers do not count.

02Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw53444bb5/downloads/signa-s2-infosheet-en.pdfRead 16 October 2026The box holds a sound bar and a subwoofer only. No rear speakers are listed.

03Owner's manualusa.yamaha.com/files/download/other_assets/8/1624438/web_AV23-0002_SR-B40A_ug_UABGRIN_En_B0.pdfRead 13 October 2026

Included rear speaker connectioniAudio link to the supplied rear speaker enclosures. Their power connection is separate.

Not available

Not available

Detachable rear speakersiThe bar has supplied detachable end sections usable as separate rear speakers.

No2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw53444bb5/downloads/signa-s2-infosheet-en.pdfRead 16 October 2026

Not available

Compatible optional subwoofersiMaker-named compatible additional subwoofer models. These do not contribute to the reference package layout, dimensions or measurements.

Not available

Not available

Compatible optional rear speakersiMaker-named compatible additional rear speaker models. These do not contribute to the reference package layout, dimensions or measurements.

Not available

Not available

Total RMS audio output poweriMaker-stated RMS or rated continuous amplifier output for the exact supplied package. Peak or unspecified maximum claims do not qualify. Distortion, load and rating conditions belong in the source note. Power consumption is separate.

Not available

Not available

Total peak audio output poweriMaker-stated peak or maximum amplifier output for the exact supplied package. This is separate from RMS or continuous output and from electrical consumption. Rating conditions belong in the source note.

Not available

200W3Owner's manualusa.yamaha.com/files/download/other_assets/8/1624438/web_AV23-0002_SR-B40A_ug_UABGRIN_En_B0.pdfRead 13 October 2026Maker lists maximum rated output power 50 W x 2 channels for the bar and 100 W for the subwoofer. The Yamaha USA specs page totals 200 W. Rating conditions are not stated.

Published frequency response lower limitiMaker-published lower limit for the exact supplied package. Tolerance and test conditions belong in the source note. Reviewer extension measurements are separate.

45Hz2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw53444bb5/downloads/signa-s2-infosheet-en.pdfRead 16 October 2026Infosheet gives frequency response 45 Hz to 20 kHz for the system. Tolerance and test conditions are not published.

33Hz3Owner's manualusa.yamaha.com/files/download/other_assets/8/1624438/web_AV23-0002_SR-B40A_ug_UABGRIN_En_B0.pdfRead 13 October 2026Subwoofer 33 Hz to 210 Hz. The maker publishes ranges per component and no single system figure.

Published frequency response upper limitiMaker-published upper limit for the exact supplied package. Tolerance and test conditions belong in the source note.

20kHz2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw53444bb5/downloads/signa-s2-infosheet-en.pdfRead 16 October 2026

22kHz3Owner's manualusa.yamaha.com/files/download/other_assets/8/1624438/web_AV23-0002_SR-B40A_ug_UABGRIN_En_B0.pdfRead 13 October 2026Front L/R 210 Hz to 22 kHz. Tweeter 9 kHz to 22 kHz. Per component, no tolerance stated.

Audio formats

6 of 9 differ

Dolby AtmosiExplicit support for Dolby Atmos playback. Transport codec and connection restrictions belong in source notes.

No1Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s2/112625.htmlRead 16 October 2026The page describes Dolby Digital 5.1 decoding and says nothing about Dolby Atmos. Reviews and the HomeTheaterReview summary also say the bar has no Atmos.

Yes2Maker product pageusa.yamaha.com/products/audio_visual/sound_bar/sr-b40a/specs.htmlRead 13 October 2026Specs page lists Dolby Atmos as the sound technology and Dolby TrueHD, Dolby Digital Plus and Dolby Digital as Yes. DTS Digital Surround is No.

DTS:XiExplicit support for DTS:X playback. Virtual surround processing alone does not establish DTS:X decoding.

No4Press articleareadvd.de/news/polk-audio-praesentiert-neue-tv-soundbar-signa-s2Read 16 October 2026The sister article of 2018-10-27 says the bar has an integrated Dolby Digital decoder and supports neither Dolby Digital Plus nor DTS. No DTS:X is claimed in any source.

Not available

Supported audio formatsiAudio formats explicitly decoded by the device. Codec and connection restrictions belong in source notes. Bluetooth codecs and music-file formats are separate.

Dolby Digital1Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s2/112625.htmlRead 16 October 2026Page: Dolby Digital 5.1 decoding for virtual surround. The comparison table says Dolby Digital and DTS virtual surround. No DTS decoding is stated in a maker document.

Linear PCM, Dolby Digital, Dolby Digital Plus, Dolby TrueHD, Dolby Atmos3Owner's manualusa.yamaha.com/files/download/other_assets/8/1624438/web_AV23-0002_SR-B40A_ug_UABGRIN_En_B0.pdfRead 13 October 2026

Audio formats by connectioniExplicitly supported audio decoding combinations. Max input channels counts decoded input audio channels, including LFE. A 5.1 layout has 6 channels and 7.1 has 8. Output speaker layouts and Atmos objects do not count. Atmos over Dolby Digital Plus and over Dolby TrueHD are separate rows. Format support on one input does not prove support on another.

APolk Audio Signa S2

Connection	Format	Max input channels
HDMI ARC	Dolby Digital	6
Optical	Dolby Digital	6

Source3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dwfc4e9ad6/downloads/signa-s2-quickstartguide-en.pdfRead 16 October 2026Quick start guide: HDMI (ARC) and optical support Dolby 5.1 decoding. Six channels counts the 5.1 layout including LFE. The guide lists no other connection-specific format limits.

BYamaha SR-B40A

Connection	Format	Max input channels
HDMI eARC	Linear PCM	8
HDMI eARC	Dolby Digital	Not available
HDMI eARC	Dolby Digital Plus	Not available
HDMI eARC	Dolby TrueHD	Not available
HDMI eARC	Dolby Atmos	Not available
HDMI ARC	Linear PCM	2
HDMI ARC	Dolby Digital	Not available
HDMI ARC	Dolby Digital Plus	Not available
HDMI ARC	Dolby Atmos	Not available
Optical	Linear PCM	2
Optical	Dolby Digital	Not available

Source3Owner's manualusa.yamaha.com/files/download/other_assets/8/1624438/web_AV23-0002_SR-B40A_ug_UABGRIN_En_B0.pdfRead 13 October 2026Supported digital audio signal formats tables. eARC: 2-channel PCM, multichannel PCM up to 7.1 channels (8), and Dolby Digital, TrueHD, Digital Plus and Atmos bitstreams. ARC: 2-channel PCM, Dolby Digital, Digital Plus and Atmos. Optical: 2-channel PCM and Dolby Digital. The tables do not state Atmos transport per format.

Music file formatsiPublished local or network music-file playback formats. Playback route and app restrictions belong in source notes.

Not available

Not available

Max wired audio sample rateiHighest explicitly published supported sample rate for decoded wired audio input. Name the exact HDMI, ARC, eARC or optical connection and codec in source notes. This is the published route limit, not proof of a device-wide maximum across all inputs. Local or network music-file limits and Bluetooth do not qualify. A chipset limit is not device evidence.

Not available

96kHz3Owner's manualusa.yamaha.com/files/download/other_assets/8/1624438/web_AV23-0002_SR-B40A_ug_UABGRIN_En_B0.pdfRead 13 October 2026PCM over HDMI eARC, HDMI ARC and optical: up to 96 kHz. Multichannel PCM over eARC also tops out at 96 kHz.

Max music file sample rateiHighest explicitly published supported local or network music-file sample rate. Name the playback route and file format in source notes. This is the published route and format limit, not proof of a device-wide maximum across all music formats. Wired HDMI or optical input and Bluetooth are separate.

Not available

Not available

Max wired audio bit depthiHighest explicitly published supported bit depth for decoded wired audio input. Name the exact HDMI, ARC, eARC or optical connection and codec in source notes. This is the published route limit, not proof of a device-wide maximum across all inputs. Local or network music-file limits and Bluetooth do not qualify.

Not available

24bits3Owner's manualusa.yamaha.com/files/download/other_assets/8/1624438/web_AV23-0002_SR-B40A_ug_UABGRIN_En_B0.pdfRead 13 October 2026Same tables: PCM at 16, 20 and 24-bit on eARC, ARC and optical.

Max music file bit depthiHighest explicitly published supported local or network music-file bit depth. Name the playback route and file format in source notes. This is the published route and format limit, not proof of a device-wide maximum across all music formats. Wired HDMI or optical input and Bluetooth are separate.

Not available

Not available

Connectivity

6 of 17 differ

Ports on the bariPhysical connectors on the soundbar alone. Record input, output, ARC or eARC, service, subwoofer and power roles explicitly. Count identical connectors per row. Component connectors are described in source notes.

APolk Audio Signa S2

Connector	Count	Role
HDMI	1	TV connection with ARC
Optical	1	Digital audio input
3.5 mm audio	1	Analog AUX audio input
AC power	1	Soundbar power input

Source3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dwfc4e9ad6/downloads/signa-s2-quickstartguide-en.pdfRead 16 October 2026Back panel diagram labels TV (Optical), AUX, TV (HDMI ARC) and Power. The Polk page lists the same inputs. A separate subwoofer power cord is in the box.

BYamaha SR-B40A

Connector	Count	Role
HDMI	1	TV connection with eARC or ARC (HDMI OUT)
Optical	1	Digital audio input
USB-A	1	Firmware update only
AC power	1	Soundbar power input

Source3Owner's manualusa.yamaha.com/files/download/other_assets/8/1624438/web_AV23-0002_SR-B40A_ug_UABGRIN_En_B0.pdfRead 13 October 2026Specifications: one OPTICAL input, one HDMI OUT/TV (eARC/ARC) and one USB marked UPDATE ONLY. Power cords are listed for the bar and subwoofer.

HDMI ARC

Yes2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw53444bb5/downloads/signa-s2-infosheet-en.pdfRead 16 October 2026Inputs list HDMI ARC. The infosheet text describes a built-in HDMI Audio Return Channel and lists no eARC.

Yes3Owner's manualusa.yamaha.com/files/download/other_assets/8/1624438/web_AV23-0002_SR-B40A_ug_UABGRIN_En_B0.pdfRead 13 October 2026

HDMI eARC

No3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dwfc4e9ad6/downloads/signa-s2-quickstartguide-en.pdfRead 16 October 2026Back panel and connection steps name the HDMI port TV (HDMI ARC). No eARC is stated in any maker document.

Yes3Owner's manualusa.yamaha.com/files/download/other_assets/8/1624438/web_AV23-0002_SR-B40A_ug_UABGRIN_En_B0.pdfRead 13 October 2026

HDMI-CEC

Yes2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw53444bb5/downloads/signa-s2-infosheet-en.pdfRead 16 October 2026Infosheet: volume control from the TV remote requires the bar on the TV HDMI ARC port and CEC enabled on the TV.

Yes2Maker product pageusa.yamaha.com/products/audio_visual/sound_bar/sr-b40a/specs.htmlRead 13 October 2026

HDMI video passthroughiCan pass video from a dedicated HDMI source input to a television output. ARC or eARC alone does not qualify.

No3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dwfc4e9ad6/downloads/signa-s2-quickstartguide-en.pdfRead 16 October 2026The back panel has one HDMI connector, the TV ARC output. There is no HDMI source input.

No3Owner's manualusa.yamaha.com/files/download/other_assets/8/1624438/web_AV23-0002_SR-B40A_ug_UABGRIN_En_B0.pdfRead 13 October 2026The only HDMI connector is the TV output. A device other than a TV cannot be connected with the HDMI cable.

Video passthrough modesiPublished supported passthrough combinations, not inferred maxima at untested resolutions. State chroma, bit depth, HDR and firmware restrictions in source notes.

Not available

Not available

HDR passthrough formats

Not available

Not available

VRR passthrough

Not available

Not available

ALLM passthrough

Not available

Not available

HDCP versioniHighest HDCP version the maker states for an HDMI port of the soundbar, such as 2.3. When the source inputs and the TV output differ, the source input version is stored. A bar with no HDMI input stores the version of its TV output, also when that output carries video from a built-in streaming player.

2.21Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s2/112625.htmlRead 16 October 2026Key Technologies text: HDMI ARC for a single cable connection to the TV, supports 4K with HDCP 2.2, Dolby Vision and HDR10. The bar has one HDMI connector, the TV ARC output, and no HDMI source input.

Not available

Bluetooth audio inputiCan receive audio from a Bluetooth source. A Bluetooth remote alone does not qualify.

Yes2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw53444bb5/downloads/signa-s2-infosheet-en.pdfRead 16 October 2026

Yes3Owner's manualusa.yamaha.com/files/download/other_assets/8/1624438/web_AV23-0002_SR-B40A_ug_UABGRIN_En_B0.pdfRead 13 October 2026

Bluetooth versioniPublished version of the soundbar audio connection. An optional remote or detachable rear can use a different version.

Not available

5.13Owner's manualusa.yamaha.com/files/download/other_assets/8/1624438/web_AV23-0002_SR-B40A_ug_UABGRIN_En_B0.pdfRead 13 October 2026Bluetooth Ver 5.1, Class 1, A2DP, sink function only.

Bluetooth audio codecsiExplicitly supported codecs for received Bluetooth audio. A Bluetooth version alone does not establish a codec.

Not available

SBC, AAC3Owner's manualusa.yamaha.com/files/download/other_assets/8/1624438/web_AV23-0002_SR-B40A_ug_UABGRIN_En_B0.pdfRead 13 October 2026Sink function: SBC and MPEG4-AAC.

Wi-Fi

Not available

No2Maker product pageusa.yamaha.com/products/audio_visual/sound_bar/sr-b40a/specs.htmlRead 13 October 2026Specs page lists Wi-Fi No, AirPlay No and MusicCast Surround No for the SR-B40A.

Wi-Fi standardiPublished Wi-Fi standards for the soundbar, written as 802.11 names without IEEE, such as "802.11a/b/g/n/ac/ax". A Wi-Fi generation is written as its standard, so Wi-Fi 5 is "802.11ac" and Wi-Fi 6 is "802.11ax". Do not infer the standard from frequency bands.

Not available

Not available

Wi-Fi bandsiPublished radio bands, such as 2.4 GHz and 5 GHz.

Not available

Not available

Built-in Ethernet speediRated speed of the built-in port. An optional adapter does not count.

Not available

Not available

Streaming and control

2 of 8 differ

Streaming protocolsiNamed network playback protocols, such as AirPlay 2, Google Cast, Spotify Connect and Tidal Connect. Bluetooth is separate.

Not available

Not available

Voice assistantsiNamed assistants supported by the soundbar. Built-in and external-device routes and market restrictions belong in source notes.

Not available

Not available

Built-in microphoneiPhysical microphone in the bar for voice or calibration. An external setup phone or remote microphone does not count.

Not available

Not available

Microphone mute controliA physical control on the soundbar explicitly disables its built-in voice microphone. State whether this is an electrical switch or software-controlled button when known.

Not available

Not available

Companion apps

Not available

Sound Bar Remote3Owner's manualusa.yamaha.com/files/download/other_assets/8/1624438/web_AV23-0002_SR-B40A_ug_UABGRIN_En_B0.pdfRead 13 October 2026Free Sound Bar Remote app. Tone control works only in the app.

Companion app platforms

Not available

iOS, Android3Owner's manualusa.yamaha.com/files/download/other_assets/8/1624438/web_AV23-0002_SR-B40A_ug_UABGRIN_En_B0.pdfRead 13 October 2026

Multiroom audioiCan play synchronised audio with other rooms through a supported network platform. Optional surround expansion alone does not qualify.

Not available

Not available

Remote includediA separate remote control supplied with the reference package. Phone apps and TV remotes do not count.

Yes1Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s2/112625.htmlRead 16 October 2026

Yes3Owner's manualusa.yamaha.com/files/download/other_assets/8/1624438/web_AV23-0002_SR-B40A_ug_UABGRIN_En_B0.pdfRead 13 October 2026

Sound processing

3 of 7 differ

Sound modes

Movie, Music, Night1Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s2/112625.htmlRead 16 October 2026Page features: movie and music modes, one button preset EQ settings, and a Night Mode.

Stereo, Standard, Movie, Game3Owner's manualusa.yamaha.com/files/download/other_assets/8/1624438/web_AV23-0002_SR-B40A_ug_UABGRIN_En_B0.pdfRead 13 October 2026One stereo mode and three surround modes: Standard, Movie and Game.

Automatic room calibrationiExplicit acoustic measurement or analysis used to adapt playback to the room. Manual EQ alone does not qualify. Setup phone requirements belong in source notes.

Not available

Not available

Room calibration system

Not available

Not available

Dialogue enhancementiA dialogue or voice mode counts, also when the maker lists it as an EQ preset.

Yes1Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s2/112625.htmlRead 16 October 2026

Yes3Owner's manualusa.yamaha.com/files/download/other_assets/8/1624438/web_AV23-0002_SR-B40A_ug_UABGRIN_En_B0.pdfRead 13 October 2026

Night mode

Yes1Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s2/112625.htmlRead 16 October 2026

Not available

Equalizer controlsiPublished user-adjustable EQ controls. Bass and treble controls are distinct from multi-band EQ.

Bass Control3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dwfc4e9ad6/downloads/signa-s2-quickstartguide-en.pdfRead 16 October 2026Optimizing your listening experience: bass control raises or lowers the bass volume. The remote has bass up and down buttons.

Treble, Bass, Subwoofer level, Bass Extension3Owner's manualusa.yamaha.com/files/download/other_assets/8/1624438/web_AV23-0002_SR-B40A_ug_UABGRIN_En_B0.pdfRead 13 October 2026Tone control in the app adjusts treble and bass from -6 to +6. The remote has an independent subwoofer level control. Bass Extension is an on or off function.

TV speaker integrationiNamed features allowing compatible television speakers to play with the bar. TV models and connection requirements belong in source notes.

Not available

Not available

Power

3 of 6 differ

Published operating poweriMaker-published operating electrical consumption of the soundbar alone. Included subwoofer and rear-speaker consumption do not count. Keep workload and method in source notes. Audio amplifier output is separate.

40W3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dwfc4e9ad6/downloads/signa-s2-quickstartguide-en.pdfRead 16 October 2026Specifications for the sound bar: power consumption 40 W. The subwoofer is listed separately at 40 W.

25W3Owner's manualusa.yamaha.com/files/download/other_assets/8/1624438/web_AV23-0002_SR-B40A_ug_UABGRIN_En_B0.pdfRead 13 October 2026Sound bar power consumption 25 W. The subwoofer is listed separately at 20 W rated.

Published standby poweriMaker-published non-networked standby consumption of the bar alone. Networked standby and other components are separate.

0.3W3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dwfc4e9ad6/downloads/signa-s2-quickstartguide-en.pdfRead 16 October 2026Sound bar standby mode 0.3 W. Subwoofer standby 0.26 W.

0.3W3Owner's manualusa.yamaha.com/files/download/other_assets/8/1624438/web_AV23-0002_SR-B40A_ug_UABGRIN_En_B0.pdfRead 13 October 2026Sound bar standby 0.3 W with HDMI Control and Bluetooth Standby off.

Published networked standby poweriMaker-published networked standby consumption of the bar alone. Enabled radio and network conditions belong in source notes.

1.6W3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dwfc4e9ad6/downloads/signa-s2-quickstartguide-en.pdfRead 16 October 2026Sound bar Bluetooth standby 1.6 W. The bar has no other network connection, so Bluetooth standby is the only networked standby figure. Subwoofer Bluetooth standby is 1.1 W.

0.6W3Owner's manualusa.yamaha.com/files/download/other_assets/8/1624438/web_AV23-0002_SR-B40A_ug_UABGRIN_En_B0.pdfRead 13 October 2026Sound bar standby 0.6 W with HDMI Control and Bluetooth Standby on. The bar has no Wi-Fi.

Power supplyiPublished AC input range or external DC adapter arrangement. Electrical input ratings are not operating consumption.

Sound bar: AC 100 to 230 V, 50/60 Hz. The wireless subwoofer has its own power cord, AC 100 to 230 V, 50/60 Hz.3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dwfc4e9ad6/downloads/signa-s2-quickstartguide-en.pdfRead 16 October 2026Specifications: sound bar AC 100 to 230 V, 50/60 Hz and subwoofer AC 100 to 230 V, 50/60 Hz.

Sound bar: AC 100 to 120 V, 50/60 Hz (US, Canada, Taiwan and Mexico models). The wireless subwoofer has its own power cord, AC 100 to 120 V, 50/60 Hz.3Owner's manualusa.yamaha.com/files/download/other_assets/8/1624438/web_AV23-0002_SR-B40A_ug_UABGRIN_En_B0.pdfRead 13 October 2026

Detachable rear battery lifeiMaker-stated runtime of the supplied detachable rear speakers. Volume, mode and recharge conditions belong in source notes.

Not available

Not available

Detachable rear charge timeiMaker-stated full recharge time of supplied detachable rear speakers. Charging route belongs in source notes.

Not available

Not available

Measured

None of 8 known

Low-frequency extension (measured)iReviewer-measured lower extension for the exact tested package. Test threshold, mode, room correction and configuration belong in source notes.

Not available

Not available

High-frequency extension (measured)iReviewer-measured upper extension for the exact tested package. Test threshold and configuration belong in source notes.

Not available

Not available

Max sound pressure (measured)iReviewer-measured maximum sound pressure. Signal, distance, sound mode and supplied or optional speaker configuration belong in source notes.

Not available

Not available

Frequency response deviation (measured)iReviewer-measured standard error against the stated target. Target, averaging range, preset and test method belong in source notes.

Not available

Not available

Measured latencyiReviewer-measured audio latency. Keep source/TV, firmware, codec, synchronisation correction and exact tested speaker configuration in source notes. Negative offsets are valid when the method reports them.

Not available

Not available

Operating power (measured)iReviewer-measured operating consumption of the soundbar alone. Optional or supplied external speakers do not count. Workload and enabled radio conditions belong in source notes.

Not available

Not available

Standby power (measured)iReviewer-measured bar-only standby consumption. Network state and test conditions belong in source notes.

Not available

Not available

Soundbar weight (measured)iReviewer-measured bar-only weight. Excludes subwoofer, rears, mounting hardware and cables.

Not available

Not available

Dimensions and weight

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Soundbar dimensionsiBar alone in its normal tabletop orientation, without detachable rears, wall brackets or external cables. A source that includes detachable ends must use component_dimensions instead. A size labelled L x W x H, as on Amazon, is width x depth x height.

Width900Height55Depth84mm(35.4 × 2.2 × 3.3 in)2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw53444bb5/downloads/signa-s2-infosheet-en.pdfRead 16 October 2026Infosheet gives the bar as W x H x D 90 x 5.5 x 8.4 cm. The product page gives 899.9 x 54.6 x 81.8 mm (35.43 x 2.15 x 3.22 in). The infosheet is used.

Width910Height68Depth133mm(35.8 × 2.7 × 5.2 in)3Owner's manualusa.yamaha.com/files/download/other_assets/8/1624438/web_AV23-0002_SR-B40A_ug_UABGRIN_En_B0.pdfRead 13 October 2026Sound bar installed in front of a TV: 910 x 68 x 133 mm. With wall spacers: 910 x 66 x 139 mm.

Soundbar weightiBar alone, without detachable rears, subwoofer, wall brackets or external cables. Source-published masses including detachable ends belong in component_dimensions.

1,800g(4 lb)2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw53444bb5/downloads/signa-s2-infosheet-en.pdfRead 16 October 2026Infosheet gives the bar as 1.8 kg.

2,900g(6.4 lb)3Owner's manualusa.yamaha.com/files/download/other_assets/8/1624438/web_AV23-0002_SR-B40A_ug_UABGRIN_En_B0.pdfRead 13 October 2026Sound bar 2.9 kg (6.4 lb). Subwoofer 8.1 kg (17.9 lb).

Component dimensions and weightiPublished dimensions and mass for named supplied components, including a bar with detachable rears attached when stated. Each row describes one enclosure, not the pair, unless the component label explicitly states a set. Width, height and depth use normal installed orientation.

APolk Audio Signa S2

Component	Width (mm)	Height (mm)	Depth (mm)	Weight (g)
Subwoofer	171	341	312	5,200

Source2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw53444bb5/downloads/signa-s2-infosheet-en.pdfRead 16 October 2026Infosheet gives the subwoofer as W x H x D 17.1 x 34.1 x 31.2 cm and 5.2 kg. The product page gives 170.7 x 340.4 x 309.9 mm.

BYamaha SR-B40A

Component	Width (mm)	Height (mm)	Depth (mm)	Weight (g)
Subwoofer SR-WSWB40A	194	419	407	8,100

Source3Owner's manualusa.yamaha.com/files/download/other_assets/8/1624438/web_AV23-0002_SR-B40A_ug_UABGRIN_En_B0.pdfRead 13 October 2026

Package dimensions

Width975.4Height241.3Depth482.6mm(38.4 × 9.5 × 19 in)7Retailer pagegreentoe.com/product/Polk_Audio_Polk_Audio_Signa_S2_2-1-Channel_Soundbar_System_AM6214-ARead 16 October 2026Box dimensions (LxWxH) 38.4 x 19 x 9.5 in, mapped to width, depth and height in that order. Inches converted exactly and rounded to 0.1 mm.

Not available

Package weightiShipping package including supplied components and packaging.

9,072g(20 lb)7Retailer pagegreentoe.com/product/Polk_Audio_Polk_Audio_Signa_S2_2-1-Channel_Soundbar_System_AM6214-ARead 16 October 2026Package weight 20 lb, converted exactly and rounded to 1 g.

Not available

Wall mountable

Yes1Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s2/112625.htmlRead 16 October 2026Specifications table lists mounting type keyhole hanger.2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw53444bb5/downloads/signa-s2-infosheet-en.pdfRead 16 October 2026Infosheet: wall mountable yes.

Yes1Maker product pageusa.yamaha.com/products/audio_visual/sound_bar/sr-b40a/index.htmlRead 13 October 2026Page lists built-in keyholes for wall mounting.

In the box

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In the box

Sound bar, Subwoofer, Remote control, AAA battery, 5 ft (1.5 m) HDMI cable, 5 ft (1.5 m) optical cable, Sound bar power cord, Subwoofer power cord, Spacers, Quick start guide1Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s2/112625.htmlRead 16 October 2026Specifications table: 2 pieces, 1 sound bar and 1 subwoofer, with a 5 ft HDMI cable, a 5 ft optical cable, a quick start guide and an IR remote control. The quick start guide adds the AAA remote battery, both power cords and spacers.

Soundbar, Wireless subwoofer, Remote control, Remote battery (CR2025), Two power cords, HDMI cable (1.5 m), Mounting template, Two spacers, Quick guide, Safety guide3Owner's manualusa.yamaha.com/files/download/other_assets/8/1624438/web_AV23-0002_SR-B40A_ug_UABGRIN_En_B0.pdfRead 13 October 2026Confirming the included items: sound bar, subwoofer SR-WSWB40A, remote with CR2025 battery, two power cords, 1.5 m HDMI cable, mounting template, two spacers, quick guide and safety guide.

Wall mount hardware includediSupplied bar mounting brackets or mount. Screws alone do not establish that a complete mount is included.

Not available

Not available

HDMI cable included

Yes1Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s2/112625.htmlRead 16 October 2026

Yes3Owner's manualusa.yamaha.com/files/download/other_assets/8/1624438/web_AV23-0002_SR-B40A_ug_UABGRIN_En_B0.pdfRead 13 October 2026

Optical cable included

Yes1Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s2/112625.htmlRead 16 October 2026

No3Owner's manualusa.yamaha.com/files/download/other_assets/8/1624438/web_AV23-0002_SR-B40A_ug_UABGRIN_En_B0.pdfRead 13 October 2026No optical cable is in the included items list.

General

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Series

Signa1Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s2/112625.htmlRead 16 October 2026

Not available

Model numbersiMaker identifiers for this exact model and its listed variants. Excludes sibling models and other generations.

112625-01-00-101, AM6214-A, AM6215-A1Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s2/112625.htmlRead 16 October 2026US page SKU and MPN 112625-01-00-101. The infosheet lists AM6214-A and the international SKU AM6215-A for the same product.

SR-B40A, SR-B40ABL1Maker product pageusa.yamaha.com/products/audio_visual/sound_bar/sr-b40a/index.htmlRead 13 October 2026Yamaha USA page for the SR-B40A bar with wireless subwoofer. SR-B40ABL is the US SKU used by retailers. The subwoofer model SR-WSWB40A comes from the user guide.

GTIN / EAN

747192131104, 07471921311112Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw53444bb5/downloads/signa-s2-infosheet-en.pdfRead 16 October 2026UPC 747192131104 for AM6214-A. The international SKU AM6215-A has UPC 0747192131111.

0271089619274Retailer pageworldwidestereo.com/products/yamaha-sr-b40a-dolby-atmos-sound-bar-with-wireless-subwooferRead 13 October 2026US retailer lists model SR-B40ABL with UPC 027108961927. The ABL suffix is the black US SKU as listed by the retailer.

AnnouncediThe maker's first announcement of this model. This is separate from first retail availability.

September 20186Press articlexatakahome.com/altavoces/polk-audio-renueva-su-gama-barras-sonido-compacta-signa-s2/ampRead 16 October 2026Spanish article dated 2018-09-08 reports the new Signa S2 as announced, at about 200 US dollars and arriving at dealers in the fall. The exact US price is not stated, so no US launch price is stored.

20 July 20235Press releaseusa.yamaha.com/news_events/2023/yamaha-expands-its-lineup-of-dolby-atmos-sound-bars.htmlRead 13 October 2026

Status

Available1Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s2/112625.htmlRead 16 October 2026US maker page offers the black model in stock at $249. That price is not the launch price.

Available1Maker product pageusa.yamaha.com/products/audio_visual/sound_bar/sr-b40a/index.htmlRead 13 October 2026The Yamaha USA product page, specs and downloads pages are live in 2026. The page offers no price.

PredecessoriThe model this one directly replaced, in the same line, tier and size, as the maker or a trusted review names it.

Not available

Not available

SuccessoriThe model that directly replaced this one, in the same line, tier and size. A revision such as a Slim or OLED model does not count when a next generation exists.

Not available

Not available

Launch price (US)iThe maker's US launch MSRP for the stated configuration, excluding tax. Current store prices and later discounts do not qualify.

Not available

$399.955Press releaseusa.yamaha.com/news_events/2023/yamaha-expands-its-lineup-of-dolby-atmos-sound-bars.htmlRead 13 October 2026US press release: SR-B40A $399.95 MSRP. Tax treatment is not stated.

Launch price (EU)iThe maker's euro launch price for the stated configuration, including VAT as published. Current store prices and later discounts do not qualify.

€2494Press articleareadvd.de/news/polk-audio-praesentiert-neue-tv-soundbar-signa-s2Read 16 October 2026German article of 2018-10-24: Polk announces a new TV sound bar with wireless subwoofer at 249 euros recommended retail price (UVP). VAT treatment is not stated and a German UVP normally includes VAT.

Not available

MarketsiISO country or region codes where this exact model or variant is sold. A source page's language does not establish availability.

US, EU1Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s2/112625.htmlRead 16 October 2026US page lists the US SKU. The EU market comes from the German launch report.4Press articleareadvd.de/news/polk-audio-praesentiert-neue-tv-soundbar-signa-s2Read 16 October 2026German launch report names the German market.

US1Maker product pageusa.yamaha.com/products/audio_visual/sound_bar/sr-b40a/index.htmlRead 13 October 2026

ColoursiThe maker's own colour names

Black1Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s2/112625.htmlRead 16 October 2026

Not available

Links

Not compared

Product page

www.polkaudio.com/en-us/product/sound-bars/signa-s2/112625.html1Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s2/112625.htmlRead 16 October 2026

usa.yamaha.com/products/audio_visual/sound_bar/sr-b40a/index.html1Maker product pageusa.yamaha.com/products/audio_visual/sound_bar/sr-b40a/index.htmlRead 13 October 2026

Spec sheet

www.polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw53444bb5/downloads/signa-s2-infosheet-en.pdf2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw53444bb5/downloads/signa-s2-infosheet-en.pdfRead 16 October 2026

Not available

Manual

www.polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dwfc4e9ad6/downloads/signa-s2-quickstartguide-en.pdf3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dwfc4e9ad6/downloads/signa-s2-quickstartguide-en.pdfRead 16 October 2026The quick start guide is the only guide on the maker site. It says the complete owner's manual is online, but the page links no such file.

usa.yamaha.com/files/download/other_assets/8/1624438/web_AV23-0002_SR-B40A_ug_UABGRIN_En_B0.pdf3Owner's manualusa.yamaha.com/files/download/other_assets/8/1624438/web_AV23-0002_SR-B40A_ug_UABGRIN_En_B0.pdfRead 13 October 2026

EPREL registration numberiId in the EU energy label database. Each size or model of a series has its own id, so it is per variant.

Not available

Not available

Warranty

1 of 1 differ

Manufacturer warranty (source market)iThe maker's warranty period for the exact SKU or configuration and market named in the source note. It applies only to that stated market, not every regional variant. Statutory consumer rights are excluded. The base term is stored. An extension that needs registration goes in the source note.

1year1Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s2/112625.htmlRead 16 October 2026Specifications table: electronics warranty 1 year and drivers warranty 2 years for the US. The highlights text says 1 year amplifiers and 3 years speakers, and the infosheet says drivers 3 years. Only the electronics term is stored.

Not available

Both are also in the API. Back to all soundbars.