Soundbars / Compare

Polk Audio Signa S4 vs TCL S65K

A

Product A: Polk Audio

Signa S4

50 of 98 known

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B

Product B: TCL

S65K

56 of 98 known

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All 98 fields

Every value links to where we found it.

Only differences

APolk Audio Signa S4

BTCL S65K

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.

3.1.22Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026Infosheet: Dolby Atmos 3.1.2 sound bar with wireless subwoofer.

5.11Maker product pageus.tcl.com/products/s65kRead 15 October 2026General feature: Number of Channel 5.1. The product title says 5.1 Channel. The spec sheet system features row says 3.1.2, which is not used.

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.

82Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026Seven drivers in the bar plus one woofer in the subwoofer, from the infosheet driver list. The Denon page copy says eleven drivers. That copy does not match the maker driver list and is not used.

75Maker product pagetcl.com/eu/en/soundbar/s65kRead 15 October 2026TCL Europe page for the S65K: Equipped with 7 high-quality drivers and 6 physical channels. The US page does not give a driver count. The EU page names the same model, 5.1 layout and rear speakers. The split between bar, rear speakers and subwoofer is not published.

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.

72Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026

Not available

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.

22Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026

01Maker product pageus.tcl.com/products/s65kRead 15 October 2026Speaker: Up-Firing Speaker No, Front Wide-firing Speaker No, Side-firing Speaker No.

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 S4

Component	Driver type	Count	Diameter (mm)	Orientation
Soundbar	Tweeter (left and right)	2	25	Front-firing
Soundbar	Racetrack midrange (left and right), 120 × 40 mm	2	Not available	Front-firing
Soundbar	Full-range center	1	25	Not available
Soundbar	Elevation (left and right)	2	66	Up-firing
Subwoofer	Woofer	1	150	Down-firing

Source2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026Infosheet lists two 1 in tweeters, two 4.7 x 1.6 in racetrack mids, one 1 in full-range center and two 2.6 in elevation drivers in the bar, and one 5.9 in woofer in the subwoofer. Metric sizes as published. Elevation and subwoofer firing directions come from the Trusted Reviews review.

BTCL S65K

Component	Driver type	Count	Diameter (mm)
Subwoofer	Woofer	1	165.1

Source1Maker product pageus.tcl.com/products/s65kRead 15 October 2026Overview: wireless subwoofer with 6.5 in driver. The page names a built-in center speaker and a built-in tweeter in the bar but gives no sizes or counts.

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/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026

Yes1Maker product pageus.tcl.com/products/s65kRead 15 October 2026Speaker: Wireless Subwoofer Included Yes.

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/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026

Wireless3Owner's manualstatic.helpjuice.com/helpjuice_production/uploads/upload/image/5306/6673890/S65K_QSG_NA.pdfRead 15 October 2026Section 3b: the subwoofer pairs automatically with the sound bar. It needs its own power cord, so only the audio link is wireless.

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

150mm2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026Infosheet: woofer 5.9 in / 15 cm. Some retailer copy says 5.25 in. The maker figure is stored.

165.1mm1Maker product pageus.tcl.com/products/s65kRead 15 October 2026Speaker: Subwoofer Driver Dimension 6.5 in, which is 165.1 mm. The spec sheet row Subwoofer Driver Dimensions 52 x 86mm does not fit a 6.5 in driver and is not used. The Amazon listing also says woofer diameter 6.5 inches.

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/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026What is in the Box lists a sound bar and a subwoofer only. The Trusted Reviews review says rear speakers cannot be added.

21Maker product pageus.tcl.com/products/s65kRead 15 October 2026Speaker: Wireless Rear Speaker Included Yes. The quick start guide box list gives the count of 2.3Owner's manualstatic.helpjuice.com/helpjuice_production/uploads/upload/image/5306/6673890/S65K_QSG_NA.pdfRead 15 October 2026What's in the box: Satellite Speaker x 2.

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

Not available

Wireless3Owner's manualstatic.helpjuice.com/helpjuice_production/uploads/upload/image/5306/6673890/S65K_QSG_NA.pdfRead 15 October 2026Section 3c: the satellite speakers pair automatically with the sound bar, and pairing is by button. They have their own power cord, so only the audio link is wireless.

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

Not available

No3Owner's manualstatic.helpjuice.com/helpjuice_production/uploads/upload/image/5306/6673890/S65K_QSG_NA.pdfRead 15 October 2026What's in the box: the sound bar and the two satellite speakers are separate items. The bar has no detachable end sections.

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

630W1Maker product pageus.tcl.com/products/s65kRead 15 October 2026Audio feature: Maximum Audio Power 630W. The page does not say RMS. Stored as the maximum figure.2Maker spec sheet (PDF)static.helpjuice.com/helpjuice_production/uploads/upload/image/5306/6594843/2026_S65K_Soundbars_SpecSheet.pdfRead 15 October 2026Audio (soundbar): Maximum Audio Power (Watts) 630W. Sound pressure level 95 dB, measured with pink noise at 1 m, C-weighted. The product page says 98 dB.

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.

Not available

Not available

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

Not available

Not available

Audio formats

5 of 9 differ

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

Yes2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026

Yes1Maker product pageus.tcl.com/products/s65kRead 15 October 2026Audio feature: Dolby Atmos Yes.

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

No4Reviewtrustedreviews.com/reviews/polk-signa-s4Read 13 October 2026Review states the sound bar decodes PCM and Dolby formats and has no support for any DTS format. The maker manual lists no DTS format.

Yes1Maker product pageus.tcl.com/products/s65kRead 15 October 2026Audio feature: DTS:X Yes.

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.

Linear PCM, Dolby Digital, Dolby Digital Plus, Dolby TrueHD, Dolby Atmos3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw3319e610/downloads/signa-s4-owners-manual-en.pdfRead 13 October 2026Specifications page: Linear PCM, Dolby Digital, Dolby Digital Plus, Dolby TrueHD and Dolby Atmos. No DTS format is listed.

PCM, Dolby Surround, Dolby Atmos, DTS, DTS-HD, DTS:X3Owner's manualstatic.helpjuice.com/helpjuice_production/uploads/upload/image/5306/6673890/S65K_QSG_NA.pdfRead 15 October 2026Remote section 6b note: the LED display shows the audio format, such as PCM AUDIO / DOLBY SURROUND / DOLBY ATMOS / DTS / DTS HD / DTS:X, etc. The list ends with etc. and does not tie a format to an input.

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 S4

Connection	Format
HDMI eARC	Dolby Atmos

Source2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026Maker states Dolby Atmos needs the HDMI eARC connection between sound bar and TV. No other connection-specific format limits are published.

BTCL S65K

Not available

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

Not available

MP3, WMA, WAV, FLAC1Maker product pageus.tcl.com/products/s65kRead 15 October 2026Decoding format: Audio Format Support MP3, FLAC, WAV. The quick start guide also lists WMA.2Maker spec sheet (PDF)static.helpjuice.com/helpjuice_production/uploads/upload/image/5306/6594843/2026_S65K_Soundbars_SpecSheet.pdfRead 15 October 2026USB feature: Audio Format Support MP3, FLAC, WAV.3Owner's manualstatic.helpjuice.com/helpjuice_production/uploads/upload/image/5306/6673890/S65K_QSG_NA.pdfRead 15 October 2026Section 9 USB: supported audio files MP3, WMA, WAV, FLAC. USB format FAT, FAT32, exFAT, NTFS. Max USB capacity 128 GB.

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.

48kHz3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw3319e610/downloads/signa-s4-owners-manual-en.pdfRead 13 October 2026Specifications page lists sampling frequency 32, 44.1 and 48 kHz for the sound bar. It does not name the connection or codec.

Not available

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

Not available

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

5 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 S4

Connector	Count	Version	Role
HDMI	1	2.1	TV connection with eARC or ARC
Optical	1	Not available	Digital audio input
3.5 mm audio	1	Not available	Analog AUX audio input
USB-A	1	Not available	Firmware updates
AC power	1	Not available	Soundbar power input

Source2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026Infosheet inputs: one HDMI eARC output, one optical input, one 3.5 mm analog input, Bluetooth and one USB-A for firmware updates. The manual also describes a hidden USB music input. HDMI 2.1 comes from the launch announcement text on Home Theater Forum and the Greentoe retailer table, not from the maker documents.

BTCL S65K

Connector	Count	Version	Role
HDMI	1	2.1	HDMI eARC/ARC output to the TV
HDMI	1	2.0	HDMI IN for a source device
Optical	1	Not available	Digital audio input
USB-A	1	Not available	Music playback and software update
AC power	1	Not available	Detachable AC power cord input

Source2Maker spec sheet (PDF)static.helpjuice.com/helpjuice_production/uploads/upload/image/5306/6594843/2026_S65K_Soundbars_SpecSheet.pdfRead 15 October 2026Connections: HDMI ARC Yes, HDMI 2.1. HDMI IN Yes. USB Playback Yes. Port roles and the optical input are from the quick start guide.3Owner's manualstatic.helpjuice.com/helpjuice_production/uploads/upload/image/5306/6673890/S65K_QSG_NA.pdfRead 15 October 2026Section 3a overview: AC input, HDMI eARC connector, HDMI IN connector, optical input connector, USB Type A connector. Section 7b: the HDMI IN carries audio from an external device. The product page lists Optical In 0, which the quick start guide and TCL Europe page contradict.4Press releaseus.tcl.com/blogs/press-releases/tcl-launches-s65k-and-s60k-dolby-atmos-soundbarsRead 15 October 2026Feature list: HDMI 2.1 with eARC / HDMI 2.0 and Optical / Bluetooth 5.3. The two HDMI versions are read as the eARC output at 2.1, which the spec sheet also states, and the HDMI IN at 2.0.

HDMI ARC

Yes3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw3319e610/downloads/signa-s4-owners-manual-en.pdfRead 13 October 2026

Yes1Maker product pageus.tcl.com/products/s65kRead 15 October 2026Connectivity: HDMI ARC Yes (eARC 2.1).2Maker spec sheet (PDF)static.helpjuice.com/helpjuice_production/uploads/upload/image/5306/6594843/2026_S65K_Soundbars_SpecSheet.pdfRead 15 October 2026Connections: HDMI ARC1 Yes, HDMI 2.1.

HDMI eARC

Yes2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026

Yes1Maker product pageus.tcl.com/products/s65kRead 15 October 2026Connectivity: HDMI ARC Yes (eARC 2.1).2Maker spec sheet (PDF)static.helpjuice.com/helpjuice_production/uploads/upload/image/5306/6594843/2026_S65K_Soundbars_SpecSheet.pdfRead 15 October 2026The footnote says the TV needs to support HDMI-eARC/ARC. The product page states Yes (eARC 2.1).

HDMI-CEC

Yes3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw3319e610/downloads/signa-s4-owners-manual-en.pdfRead 13 October 2026

Yes1Maker product pageus.tcl.com/products/s65kRead 15 October 2026Connectivity: HDMI CEC Yes.2Maker spec sheet (PDF)static.helpjuice.com/helpjuice_production/uploads/upload/image/5306/6594843/2026_S65K_Soundbars_SpecSheet.pdfRead 15 October 2026Footnote 1: requires TV support for HDMI-eARC/ARC and HDMI-CEC.3Owner's manualstatic.helpjuice.com/helpjuice_production/uploads/upload/image/5306/6673890/S65K_QSG_NA.pdfRead 15 October 2026Section 7a: enable CEC on the TV. HDMI CEC ON.

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/dw3319e610/downloads/signa-s4-owners-manual-en.pdfRead 13 October 2026The only HDMI connector is the TV eARC/ARC connection. There is no HDMI source input.

Not available

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.

Not available

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/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026

Yes1Maker product pageus.tcl.com/products/s65kRead 15 October 2026Connectivity: Bluetooth Yes (Version 5.3).

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

5.03Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw3319e610/downloads/signa-s4-owners-manual-en.pdfRead 13 October 2026Specifications page: Bluetooth Version 5.0, Power Class 2, A2DP 1.3 and AVRCP 1.6.

5.31Maker product pageus.tcl.com/products/s65kRead 15 October 2026Connectivity: Bluetooth Yes (Version 5.3).2Maker spec sheet (PDF)static.helpjuice.com/helpjuice_production/uploads/upload/image/5306/6594843/2026_S65K_Soundbars_SpecSheet.pdfRead 15 October 2026Connections: Bluetooth Yes (version 5.3).

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

SBC3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw3319e610/downloads/signa-s4-owners-manual-en.pdfRead 13 October 2026Specifications page: corresponding codec SBC.

Not available

Wi-Fi

Not available

No1Maker product pageus.tcl.com/products/s65kRead 15 October 2026Connectivity: Wi-Fi No. The Amazon listing lists Wi-Fi in its connectivity field, which the maker page and spec sheet do not support.

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

TCL Home1Maker product pageus.tcl.com/products/s65kRead 15 October 2026Smart feature: TCL Home/T+ App Yes.

Companion app platforms

Not available

iOS, Android7Maker product pagesupport.tcl.com/en_US/tcl-home-app-overviewRead 15 October 2026TCL support page: the TCL Home App has an iOS version and an Android version. The page is an air conditioner setup article. The S65K guide says to download TCL Home from the app stores.

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-s4/300443.htmlRead 13 October 2026

Yes1Maker product pageus.tcl.com/products/s65kRead 15 October 2026Connectivity: One Remote Control Yes. Accessories: TCL One Remote.2Maker spec sheet (PDF)static.helpjuice.com/helpjuice_production/uploads/upload/image/5306/6594843/2026_S65K_Soundbars_SpecSheet.pdfRead 15 October 2026Accessories: Remote Control TCL One Remote.3Owner's manualstatic.helpjuice.com/helpjuice_production/uploads/upload/image/5306/6673890/S65K_QSG_NA.pdfRead 15 October 2026What's in the box: Remote Control, battery type 1.5 V AAA x 2.

Sound processing

5 of 7 differ

Sound modes

Movie, Music, Night2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026

Standard, Movie, Music, Voice, Game, Sports, Night, Custom1Maker product pageus.tcl.com/products/s65kRead 15 October 2026Audio feature: Sound Modes Standard / Movie / Music / Voice / Game / Sport / Custom. The spec sheet adds Night. Sports is the spec sheet wording.2Maker spec sheet (PDF)static.helpjuice.com/helpjuice_production/uploads/upload/image/5306/6594843/2026_S65K_Soundbars_SpecSheet.pdfRead 15 October 2026Audio: EQ Settings STANDARD / MOVIE / MUSIC / VOICE / GAME / NIGHT / SPORTS / CUSTOM.

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

Yes1Maker product pageus.tcl.com/products/s65kRead 15 October 2026Special feature: Ai Sonic Auto Room Calibration Yes.3Owner's manualstatic.helpjuice.com/helpjuice_production/uploads/upload/image/5306/6673890/S65K_QSG_NA.pdfRead 15 October 2026Section 11: AI Sonic-Adaptation is a room calibration technology. The cellphone microphone measures the test signals in the TCL Home App.

Room calibration system

Not available

TCL AI Sonic-Adaptation1Maker product pageus.tcl.com/products/s65kRead 15 October 2026Overview: AI Sonic Auto Room Calibration powered by AI Sonic.

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

Yes2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026

Yes1Maker product pageus.tcl.com/products/s65kRead 15 October 2026Special feature: Dialog Enhancer Yes.

Night mode

Yes2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026

Yes3Owner's manualstatic.helpjuice.com/helpjuice_production/uploads/upload/image/5306/6673890/S65K_QSG_NA.pdfRead 15 October 2026Remote section 6b: Night Mode on/off button.

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

Bass Adjust2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026

Bass, Treble3Owner's manualstatic.helpjuice.com/helpjuice_production/uploads/upload/image/5306/6673890/S65K_QSG_NA.pdfRead 15 October 2026LED display table: Bass -6 to +6 and Treble -6 to +6. The remote also adjusts channel levels and audio delay.

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

Not available

TCL Tutti Choral1Maker product pageus.tcl.com/products/s65kRead 15 October 2026Special feature: TCL Tutti Choral (ChoruSound) Yes and TCL TV Ready Yes. The guide says the function works with some TCL TVs.

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/dw3319e610/downloads/signa-s4-owners-manual-en.pdfRead 13 October 2026Sound bar specifications: power consumption 40 W. The subwoofer is listed separately at 40 W.

35W3Owner's manualstatic.helpjuice.com/helpjuice_production/uploads/upload/image/5306/6673890/S65K_QSG_NA.pdfRead 15 October 2026Nominal electrical characteristics table: S65K Power consumption 35 W. The same table gives 30 W for the subwoofer model S65K-SW and 15 W for the satellite model S65K-RS. The workload is not stated.

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

1.5W3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw3319e610/downloads/signa-s4-owners-manual-en.pdfRead 13 October 2026Sound bar standby mode 1.5 W. Deep standby mode 0.3 W. The sound bar has no network standby.

Not available

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

Not available

Not available

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

Sound bar: AC 100 to 240 V, 50/60 Hz. The wireless subwoofer has its own power cord, AC 100 to 240 V, 50/60 Hz.3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw3319e610/downloads/signa-s4-owners-manual-en.pdfRead 13 October 2026

Soundbar: AC 100-240 V, 50/60 Hz, detachable power cord. The wireless subwoofer and each satellite speaker have their own detachable power cord, also rated AC 100-240 V, 50/60 Hz.3Owner's manualstatic.helpjuice.com/helpjuice_production/uploads/upload/image/5306/6673890/S65K_QSG_NA.pdfRead 15 October 2026Nominal electrical characteristics table: S65K 100-240 V~ 50/60 Hz, S65K-SW 100-240 V~ 50/60 Hz, S65K-RS 100-240 V~ 50/60 Hz. What's in the box: Power Cord x 4.

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.

Width1,046Height60Depth95mm(41.2 × 2.4 × 3.7 in)2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026Infosheet gives sound bar W x D x H as 1046 x 95 x 60 mm.

Width850Height64Depth90mm(33.5 × 2.5 × 3.5 in)1Maker product pageus.tcl.com/products/s65kRead 15 October 2026Main Unit Size (Soundbar) (WxHxD) 850 x 64 x 90 mm.2Maker spec sheet (PDF)static.helpjuice.com/helpjuice_production/uploads/upload/image/5306/6594843/2026_S65K_Soundbars_SpecSheet.pdfRead 15 October 2026Soundbar Dimensions (WxHxD) 850 x 64 x 90mm.

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

2,900g(6.4 lb)3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw3319e610/downloads/signa-s4-owners-manual-en.pdfRead 13 October 2026Sound bar weight 6 lbs 6 oz (2.9 kg). Subwoofer weight 9 lbs 1 oz (4.1 kg).

2,750g(6.1 lb)1Maker product pageus.tcl.com/products/s65kRead 15 October 2026Main Unit Weight (Soundbar) 6.06 lbs | 2.75 kg.2Maker spec sheet (PDF)static.helpjuice.com/helpjuice_production/uploads/upload/image/5306/6594843/2026_S65K_Soundbars_SpecSheet.pdfRead 15 October 2026Product and package information: Soundbar Weight 2.75 kg.

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 S4

Component	Width (mm)	Height (mm)	Depth (mm)	Weight (g)
Subwoofer	200	280	328	4,100

Source2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026Infosheet gives subwoofer W x D x H as 200 x 328 x 280 mm. Weight comes from the manual.

BTCL S65K

Component	Width (mm)	Height (mm)	Depth (mm)	Weight (g)
Subwoofer	220	290	330	4,900
Satellite speaker (each)	110	162	120	900

Source1Maker product pageus.tcl.com/products/s65kRead 15 October 2026Net dimensions and weights: subwoofer 220 x 290 x 330 mm and 4.9 kg, rear speaker 110 x 162 x 120 mm and 0.9 kg. The spec sheet package table gives the surround width as 100 mm. The sheet states one Net Weight (Speaker) of 0.9 kg without saying if it is one speaker or the pair. It is read as one speaker because the size row is for one speaker.2Maker spec sheet (PDF)static.helpjuice.com/helpjuice_production/uploads/upload/image/5306/6594843/2026_S65K_Soundbars_SpecSheet.pdfRead 15 October 2026Product and package information: subwoofer 220 x 290 x 330 mm and 4.9 kg, surround 100 x 162 x 120 mm and 0.9 kg. The connections table gives the surround as 110 x 162 x 120 mm and so does the product page, so 110 mm is used.

Package dimensions

Width1,117.6Height263.7Depth441.5mm(44 × 10.4 × 17.4 in)7Retailer pagegreentoe.com/product/Polk_Audio_Signa_S4_3-1-2-Channel_Dolby_Atmos_Soundbar_System_300443-01-00-101Read 13 October 2026Retailer table lists box dimensions (LxWxH) as 44 x 17.38 x 10.38 in. Mapped to width, depth and height in that order. Inches converted exactly to mm and rounded to 0.1 mm.

Width931Height288Depth455mm(36.7 × 11.3 × 17.9 in)2Maker spec sheet (PDF)static.helpjuice.com/helpjuice_production/uploads/upload/image/5306/6594843/2026_S65K_Soundbars_SpecSheet.pdfRead 15 October 2026Total Package Size (WxHxD) 931 x 288 x 455mm.

Package weightiShipping package including supplied components and packaging.

9,584g(21.1 lb)7Retailer pagegreentoe.com/product/Polk_Audio_Signa_S4_3-1-2-Channel_Dolby_Atmos_Soundbar_System_300443-01-00-101Read 13 October 2026Retailer table lists package weight 21.13 lb. NFM lists 21.20 lb. Converted exactly and rounded to 1 g.

11,970g(26.4 lb)2Maker spec sheet (PDF)static.helpjuice.com/helpjuice_production/uploads/upload/image/5306/6594843/2026_S65K_Soundbars_SpecSheet.pdfRead 15 October 2026Total Package Weight 26.39 lbs | 11.97 kgs. The US product page gives a Shipping Weight of 9.58 kg for the same product. The spec sheet document is used.

Wall mountable

Yes1Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s4/300443.htmlRead 13 October 2026Page copy describes a low-profile, wall-mountable design. Wall mount template and spacers are supplied. Screws are not listed.3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw3319e610/downloads/signa-s4-owners-manual-en.pdfRead 13 October 2026Section Hanging the sound bar on a wall describes two keyholes and the supplied template and spacers.

Yes1Maker product pageus.tcl.com/products/s65kRead 15 October 2026Accessories: Wall Mount Kit Yes.3Owner's manualstatic.helpjuice.com/helpjuice_production/uploads/upload/image/5306/6673890/S65K_QSG_NA.pdfRead 15 October 2026Section 5b and 5c: wall mount installation.

In the box

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In the box

Sound bar, Subwoofer, Remote control, Sound bar power cord, Subwoofer power cord, HDMI cable, Optical cable, 2 AAA batteries, Quick start guide, Registration card, Safety card, Wall mount template, Wall mount spacers1Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s4/300443.htmlRead 13 October 2026Specifications tab What's in the Box. The infosheet lists one power cord. The page lists sound bar and subwoofer power cords.

Sound bar, Wireless subwoofer, 2 satellite speakers, 4 power cords, HDMI cable, Remote control, 2 AAA batteries, 2 wall mount brackets, 2 wall anchors, 2 wall mounting screws (M5 x 40 mm), Wall mount template, Quick start guide, Warranty card3Owner's manualstatic.helpjuice.com/helpjuice_production/uploads/upload/image/5306/6673890/S65K_QSG_NA.pdfRead 15 October 2026What's in the box: Sound Bar, Subwoofer, Satellite Speaker x 2, Power Cord x 4, HDMI Cable, Remote Control, Wall Mount Bracket x 2, Wall Anchor x 2, Wall Mounting Screw x 2 M5*40 mm, Quick Start Guide, Warranty Card, Wall Mount Template. The product page adds 2 AAA remote batteries.

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

Not available

Yes1Maker product pageus.tcl.com/products/s65kRead 15 October 2026Accessories: Wall Mount Kit Yes.2Maker spec sheet (PDF)static.helpjuice.com/helpjuice_production/uploads/upload/image/5306/6594843/2026_S65K_Soundbars_SpecSheet.pdfRead 15 October 2026Accessories: Wall Mount Kit Yes.3Owner's manualstatic.helpjuice.com/helpjuice_production/uploads/upload/image/5306/6673890/S65K_QSG_NA.pdfRead 15 October 2026Section 5b: wall mount brackets, anchors, screws and a template are in the box.

HDMI cable included

Yes1Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s4/300443.htmlRead 13 October 2026

Yes1Maker product pageus.tcl.com/products/s65kRead 15 October 2026Accessories: HDMI Cable Yes.2Maker spec sheet (PDF)static.helpjuice.com/helpjuice_production/uploads/upload/image/5306/6594843/2026_S65K_Soundbars_SpecSheet.pdfRead 15 October 2026Accessories: HDMI Cable Yes (Optional). The quick start guide box list shows an HDMI cable.

Optical cable included

Yes1Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s4/300443.htmlRead 13 October 2026

No3Owner's manualstatic.helpjuice.com/helpjuice_production/uploads/upload/image/5306/6673890/S65K_QSG_NA.pdfRead 15 October 2026The box list names no optical cable.

General

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Series

Signa1Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s4/300443.htmlRead 13 October 2026

S Class1Maker product pageus.tcl.com/products/s65kRead 15 October 2026The product title is TCL S-Class S65K. The page product type is S-Class.

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

300443-01-00-1011Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s4/300443.htmlRead 13 October 2026US page SKU 300443-01-00-101.

S65K1Maker product pageus.tcl.com/products/s65kRead 15 October 2026Variant SKU S65K. The US store has one variant.6Retailer pageamazon.com/dp/B0H2NCQ9FBRead 15 October 2026Amazon item details: Model Number S65K, Model Name S65K, sold by Amazon.com.

GTIN / EAN

7471921358298Retailer pagecreativeaudio.net/signa-s4Read 13 October 2026UPC 747192135829 listed with part number 300443-01-00-101. Electronic Express lists the same UPC.

8460420544166Retailer pageamazon.com/dp/B0H2NCQ9FBRead 15 October 2026Amazon item details: UPC 846042054416.

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

Not available

31 August 20264Press releaseus.tcl.com/blogs/press-releases/tcl-launches-s65k-and-s60k-dolby-atmos-soundbarsRead 15 October 2026TCL North America press release dated August 31, 2026. The PR Newswire copy is dated September 1.

Status

Available1Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s4/300443.htmlRead 13 October 2026US maker page offers the black model for purchase. The current page price is $449, which is not the launch price.

Available1Maker product pageus.tcl.com/products/s65kRead 15 October 2026The US store lists the product at 249.99 USD with an Add to cart button.

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.

$3995Press articlehometheaterforum.com/polk-audio-introduces-signa-s4-dolby-atmos-sound-bar-systemRead 13 October 2026Launch article of 2021-12-20 gives the system price as $399 and says it is available now from Polk Audio. The Tom's Guide review also gives $399. US MSRP excluding sales tax is not stated.

$399.994Press releaseus.tcl.com/blogs/press-releases/tcl-launches-s65k-and-s60k-dolby-atmos-soundbarsRead 15 October 2026The release says available now for 249.99 USD with a 399.99 USD MSRP. The MSRP is stored. US price, tax treatment 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.

€3496Press articleareadvd.de/news/polk-audio-stellt-neues-dolby-atmos-soundbar-system-vorRead 13 October 2026German launch report of 2021-12-16: available now for 349 euros recommended retail price (UVP) from PolkAudio.com and dealers. 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-s4/300443.htmlRead 13 October 2026US page lists the US SKU and US pricing. The EU market comes from the German launch report.6Press articleareadvd.de/news/polk-audio-stellt-neues-dolby-atmos-soundbar-system-vorRead 13 October 2026

US4Press releaseus.tcl.com/blogs/press-releases/tcl-launches-s65k-and-s60k-dolby-atmos-soundbarsRead 15 October 2026US launch release and US spec sheet.

ColoursiThe maker's own colour names

Black1Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s4/300443.htmlRead 13 October 2026

Black1Maker product pageus.tcl.com/products/s65kRead 15 October 2026General feature: Color Black.

Links

Not compared

Product page

www.polkaudio.com/en-us/product/sound-bars/signa-s4/300443.html1Maker product pagepolkaudio.com/en-us/product/sound-bars/signa-s4/300443.htmlRead 13 October 2026

us.tcl.com/products/s65k1Maker product pageus.tcl.com/products/s65kRead 15 October 2026

Spec sheet

www.polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdf2Maker spec sheet (PDF)polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw0ff899e4/downloads/signa-s4-infosheet-en.pdfRead 13 October 2026

static.helpjuice.com/helpjuice_production/uploads/upload/image/5306/6594843/2026_S65K_Soundbars_SpecSheet.pdf2Maker spec sheet (PDF)static.helpjuice.com/helpjuice_production/uploads/upload/image/5306/6594843/2026_S65K_Soundbars_SpecSheet.pdfRead 15 October 2026TCL 2026 S65K soundbars spec sheet, 2 pages.

Manual

www.polkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw3319e610/downloads/signa-s4-owners-manual-en.pdf3Owner's manualpolkaudio.com/on/demandware.static/-/Library-Sites-polk_northamerica_shared/default/dw3319e610/downloads/signa-s4-owners-manual-en.pdfRead 13 October 2026

static.helpjuice.com/helpjuice_production/uploads/upload/image/5306/6673890/S65K_QSG_NA.pdf3Owner's manualstatic.helpjuice.com/helpjuice_production/uploads/upload/image/5306/6673890/S65K_QSG_NA.pdfRead 15 October 2026S65K quick start guide, 72 pages in several languages. TCL's S Series user manual page lists only this guide and the spec sheet for the S65K. The user manual PDF is not published yet.

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

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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.

Not available

1year1Maker product pageus.tcl.com/products/s65kRead 15 October 2026Warranty - Parts and Labor: 1-Year Limited. US page.

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