Soundbars / Compare
LG S70TR vs Polk Audio Signa S4
Product A: LG
64 of 98 known
Change LG S70TR
Product B: Polk Audio
50 of 98 known
Change Polk Audio Signa S4
49 of 90 fields differ
- 26 different values
- 23 known for one only
- 15 the same
- 26 missing for both
Biggest differences
Each bar uses the scale of all 69 soundbars.
- Standby powerLower is betterA: 0.5WB: 1.5WLG is 1 W lower.
Weight
0 to 30,000 g
Soundbar weight
A3,000g
B2,900g
Package weight
A15,400g
B9,584g
All 98 fields
Every value links to where we found it.


Audio system
10 of 17 differ
System channel configuration
Physical drivers in the package
Physical drivers in the bar
Up-firing drivers in the package
Driver layout
ALG S70TR
| Component | Driver type | Count | Orientation |
|---|---|---|---|
| Soundbar | Up-firing center speaker | 1 | Up-firing |
| Soundbar | Other speakers (types and sizes not published) | 5 | Not available |
| Subwoofer | 1-way speaker | 1 | Not available |
| Rear speakers | 1-way speaker, one per rear speaker | 2 | Not available |
BPolk 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 |
Separate subwoofer included
Included subwoofer connection
Included subwoofer driver diameter
Not available
Rear speakers included
Included rear speaker connection
Not available
Detachable rear speakers
Not available
Compatible optional subwoofers
Not available
Not available
Compatible optional rear speakers
Not available
Not available
Total RMS audio output power
500W3Maker product pagelg.com/ca_en/speakers/soundbars/s70trRead 23 October 2026General: 5.1.1 channels, 9 speakers, 500 W output.4Maker product pagelg.com/in/audio/soundbars/s70trRead 23 October 2026General: output power 600 W reference (THD 30 percent) and 500 W rated (THD 10 percent). The 500 W rated figure is stored. The 600 W figure is not called a peak or maximum rating, so it is not stored.
Not available
Total peak audio output power
Not available
Not available
Published frequency response lower limit
Not available
Not available
Published frequency response upper limit
Not available
Not available
Audio formats
8 of 9 differ
Dolby Atmos
DTS:X
Yes2Owner's manualch3j39t5.media.zestyio.com/S70TR.AUSALLK_WEB.pdfRead 23 October 2026Specifications: available digital input audio format includes DTS:X. Page 34: eARC supports DTS-HD Master Audio, DTS:X, Dolby TrueHD and Dolby Atmos. The LG USA table says DTS:X No, which conflicts.3Maker product pagelg.com/ca_en/speakers/soundbars/s70trRead 23 October 2026Audio formats list includes DTS:X.5Maker product pagelg.com/uk/tvs-soundbars/qned/55qned86t6a-us70trRead 23 October 2026LG UK bundle page for the US70TR, the UK model of the S70TR: Dolby Atmos and DTS:X fill your room with a 500W 5.1.1ch surround sound system, subwoofer, and rear speakers. The page was read in Chrome. Cookies were rejected.
Supported audio formats
Dolby Digital, Dolby Digital Plus, Dolby TrueHD, Dolby Atmos, DTS Digital Surround, DTS-HD High Resolution Audio, DTS-HD Master Audio, DTS:X, PCM1Maker product pagelg.com/us/soundbars/lg-s70tr-home-theater-soundbarRead 23 October 2026Audio Format table on this page: Dolby Atmos, Dolby Digital, Dolby Digital Plus, Dolby TrueHD, DTS Digital Surround and LPCM Yes. The same table says DTS:X, DTS-HD High Resolution and DTS-HD Master Audio No. The manual, LG UK, LG Canada and LG India state DTS:X, so the manual list is stored.2Owner's manualch3j39t5.media.zestyio.com/S70TR.AUSALLK_WEB.pdfRead 23 October 2026Specifications, Available Digital Input Audio format: Dolby Digital, Dolby Digital Plus, Dolby TrueHD, Dolby Atmos, DTS Digital Surround, DTS-HD HRA, DTS-HD MA, DTS:X and PCM. The LG USA table lists fewer DTS formats.
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.
Audio formats by connection
ALG S70TR
| Connection | Format | Max input channels |
|---|---|---|
| HDMI eARC | Dolby TrueHD | Not available |
| HDMI eARC | Dolby Atmos | Not available |
| HDMI eARC | DTS-HD Master Audio | Not available |
| HDMI eARC | DTS:X | Not available |
| HDMI input | Dolby Atmos | Not available |
| HDMI input | DTS:X | Not available |
| HDMI input | PCM | 6 |
Source2Owner's manualch3j39t5.media.zestyio.com/S70TR.AUSALLK_WEB.pdfRead 23 October 2026Page 34: eARC supports DTS-HD Master Audio, DTS:X, Dolby TrueHD and Dolby Atmos. Page 37: Dolby Atmos or DTS:X from an external device on HDMI IN supports 3.1.1 channels, and 5.1.1 with the rear speakers. The PCM 5.1 (6 channel) row over HDMI IN comes from the LG Digital Customer Care answer on the Best Buy page. No other maximum channel counts are published.9Retailer pagebestbuy.com/product/lg-5-1-1-channel-s70tr-home-theater-soundbar-with-wireless-subwoofer-and-rear-speakers-dolby-atmos-wow-orchestra-black/JJ8VPZQWVTRead 23 October 2026Questions and Answers: LG Digital Customer Care replies that the S70TR supports 5.1 channel PCM through the HDMI input. This gives the PCM row with 6 channels. The page was read in Chrome. Best Buy lists 499.99 USD and a current price, not a launch price.
BPolk Audio Signa S4
| Connection | Format |
|---|---|
| HDMI eARC | Dolby Atmos |
Music file formats
MP3, WMA, AAC, FLAC, WAV1Maker product pagelg.com/us/soundbars/lg-s70tr-home-theater-soundbarRead 23 October 2026Audio Format table: MP3 and WAV Yes, WMA No. The manual playable file table lists MP3, WMA, AAC, FLAC and WAV, so the manual list is stored.2Owner's manualch3j39t5.media.zestyio.com/S70TR.AUSALLK_WEB.pdfRead 23 October 2026Playable file specifications over USB: MP3, WMA and AAC at 32 to 48 kHz, FLAC and WAV (16 bit or 24 bit) at 32 to 192 kHz.
Not available
Max wired audio sample rate
Max music file sample rate
Not available
Max wired audio bit depth
Not available
Max music file bit depth
Not available
Connectivity
9 of 17 differ
Ports on the bar
ALG S70TR
| Connector | Count | Role |
|---|---|---|
| HDMI | 1 | HDMI IN for an external source, with video passthrough to the TV |
| HDMI | 1 | HDMI OUT to the TV, eARC and ARC |
| Optical | 1 | Optical digital audio input |
| USB-A | 1 | Music playback from a USB storage device, 5 V 500 mA |
| AC power | 1 | Soundbar power input |
BPolk 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 |
HDMI ARC
HDMI eARC
HDMI-CEC
HDMI video passthrough
Video passthrough modes
ALG S70TR
| Width (px) | Height (px) | Refresh rate (Hz) |
|---|---|---|
| 3840 | 2160 | 120 |
BPolk Audio Signa S4
Not availableHDR passthrough formats
Dolby Vision, HDR101Maker product pagelg.com/us/soundbars/lg-s70tr-home-theater-soundbarRead 23 October 2026Product highlights: Dolby Vision and HDR10 Passthrough Yes.
Not available
VRR passthrough
Not available
ALLM passthrough
Not available
HDCP version
2.31Maker product pagelg.com/us/soundbars/lg-s70tr-home-theater-soundbarRead 23 October 2026Product highlights: 4K Passthrough (HDCP 2.3).2Owner's manualch3j39t5.media.zestyio.com/S70TR.AUSALLK_WEB.pdfRead 23 October 2026HDCP 2.3 for 4K sources.
Not available
Bluetooth audio input
Bluetooth version
Bluetooth audio codecs
Wi-Fi
Not available
Not available
Wi-Fi standard
Not available
Not available
Wi-Fi bands
Not available
Not available
Built-in Ethernet speed
Not available
Not available
Streaming and control
2 of 8 differ
Streaming protocols
Not available
Not available
Voice assistants
Not available
Not available
Built-in microphone
Not available
Not available
Microphone mute control
Not available
Not available
Companion apps
Not available
Companion app platforms
Not available
Multiroom audio
Not available
Not available
Sound processing
3 of 7 differ
Sound modes
AI Sound Pro, Standard, Cinema, Clear Voice Pro, Sports, Music, Game, Bass Blast1Maker product pagelg.com/us/soundbars/lg-s70tr-home-theater-soundbarRead 23 October 2026Sound Modes: AI Sound Pro, Bass Blast +, Cinema, Game, Music, Sports, Standard. The US list has no Clear Voice Pro. The manual and LG Canada list it.2Owner's manualch3j39t5.media.zestyio.com/S70TR.AUSALLK_WEB.pdfRead 23 October 2026Sound effects: AI Sound Pro, Standard, Music, Cinema, Clear Voice Pro, Sports, Game and Bass Blast (Bass Blast+). Stored as one Bass Blast mode.
Automatic room calibration
Not available
Not available
Room calibration system
Not available
Not available
Dialogue enhancement
Night mode
Equalizer controls
Bass, Mid, Treble, Subwoofer level, Center level, Rear level1Maker product pagelg.com/us/soundbars/lg-s70tr-home-theater-soundbarRead 23 October 2026Convenience: Customize EQ Remote / App Yes.2Owner's manualch3j39t5.media.zestyio.com/S70TR.AUSALLK_WEB.pdfRead 23 October 2026Sound tuning: Treble, Mid and Bass from -6 to 6, Subwoofer from -15 to 6, Center from -6 to 6 and Rear from -6 to 6.
Power
4 of 6 differ
Published operating power
Published standby power
Published networked standby power
Not available
Power supply
Not available
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
Detachable rear battery life
Not available
Not available
Detachable rear charge time
Not available
Not available
Measured
None of 8 known
Low-frequency extension (measured)
Not available
Not available
High-frequency extension (measured)
Not available
Not available
Max sound pressure (measured)
Not available
Not available
Frequency response deviation (measured)
Not available
Not available
Measured latency
Not available
Not available
Operating power (measured)
Not available
Not available
Standby power (measured)
Not available
Not available
Soundbar weight (measured)
Not available
Not available
Dimensions and weight
5 of 6 differ
Soundbar dimensions
Width950Height63Depth115mm(37.4 × 2.5 × 4.5 in)2Owner's manualch3j39t5.media.zestyio.com/S70TR.AUSALLK_WEB.pdfRead 23 October 2026Approx. 950.0 x 63.0 x 115.0 mm (W x H x D) including the base.
Soundbar weight
Component dimensions and weight
ALG S70TR
| Component | Width (mm) | Height (mm) | Depth (mm) | Weight (g) |
|---|---|---|---|---|
| Subwoofer | 200 | 377 | 285 | 5,700 |
| Rear speaker (each) | 100 | 176.5 | 120 | Not available |
| Rear speakers (set of 2) | Not available | Not available | Not available | 2,100 |
Source2Owner's manualch3j39t5.media.zestyio.com/S70TR.AUSALLK_WEB.pdfRead 23 October 2026Wireless subwoofer approx. 200.0 x 377.0 x 285.0 mm and rear speakers each approx. 100.0 x 176.5 x 120.0 mm (W x H x D) including the base. Weights come from the LG Canada page.3Maker product pagelg.com/ca_en/speakers/soundbars/s70trRead 23 October 2026Weights: subwoofer 5.7 kg and rear speakers (pair) 2.1 kg. The US page gives 12.7 lbs for the subwoofer.
BPolk Audio Signa S4
| Component | Width (mm) | Height (mm) | Depth (mm) | Weight (g) |
|---|---|---|---|---|
| Subwoofer | 200 | 280 | 328 | 4,100 |
Package dimensions
Width1,013.5Height454.7Depth259.1mm(39.9 × 17.9 × 10.2 in)1Maker product pagelg.com/us/soundbars/lg-s70tr-home-theater-soundbarRead 23 October 2026Carton Size (WxHxD) 39.9 x 17.9 x 10.2 in. Converted exactly and rounded to 0.1 mm. The LG USA sheet for the S70TY gives the same carton size.
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.
Package weight
Wall mountable
Yes1Maker product pagelg.com/us/soundbars/lg-s70tr-home-theater-soundbarRead 23 October 2026Features: this soundbar can be mounted on the wall. A wall mount bracket is in the box.2Owner's manualch3j39t5.media.zestyio.com/S70TR.AUSALLK_WEB.pdfRead 23 October 2026Mounting the Product to a Wall section.
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.
In the box
2 of 4 differ
In the box
Soundbar, Wireless subwoofer, Rear speakers (2), Remote control, HDMI cable, Optical cable, Rear speaker cable, Wall mount bracket, Wall bracket installation guide1Maker product pagelg.com/us/soundbars/lg-s70tr-home-theater-soundbarRead 23 October 2026Included accessories: HDMI cable, optical cable, rear speaker cable, remote control, wall mount bracket. Rear Speaker Included Yes. The soundbar and subwoofer are the product itself. The manual adds the wall bracket installation guide. LG Canada and LG India list no optical cable for their markets.2Owner's manualch3j39t5.media.zestyio.com/S70TR.AUSALLK_WEB.pdfRead 23 October 2026Page 47: components for mounting are the wall bracket, soundbar screws and the wall bracket installation guide. Page 24: the remote uses two AA batteries, and the manual does not say they are supplied.
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.
Wall mount hardware included
Not available
HDMI cable included
Optical cable included
General
5 of 7 differ
Series
Not available
Model numbers
GTIN / EAN
195174074367, 88060919693851Maker product pagelg.com/us/soundbars/lg-s70tr-home-theater-soundbarRead 23 October 2026UPC 195174074367 in the Warranty group. The EAN 8806091969385 comes from the LG Spain page for S70TR.DESB.10Maker product pagelg.com/es/barras-de-sonido/s70tr-desbRead 23 October 2026LG Spain page for S70TR.DESB lists EAN 8806091969385. It is a Spanish SKU. The base list holds every option.
Announced
Not available
Status
Predecessor
Not available
Not available
Successor
Not available
Not available
Launch price (US)
Not available
Launch price (EU)
Markets
US, CA, GB, DE, ES, IN8Spec databasegeizhals.at/lg-ds70tr-a3189592.htmlRead 23 October 2026Geizhals lists DS70TR.ADEULLK (Germany and Austria) as 500 W 5.1.1 with a wireless subwoofer and 2 wireless surround speakers, 950 x 63 x 115 mm. US and Canada from the LG USA and LG Canada pages. United Kingdom from the LG UK page. Spain from the LG Spain page. India from the LG India page.10Maker product pagelg.com/es/barras-de-sonido/s70tr-desbRead 23 October 2026Spain from this page. The page lists the same dimensions and weights as the other LG pages.
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
Links
Not compared
Product page
Spec sheet
Not available
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
Manual
ch3j39t5.media.zestyio.com/S70TR.AUSALLK_WEB.pdf2Owner's manualch3j39t5.media.zestyio.com/S70TR.AUSALLK_WEB.pdfRead 23 October 2026Owner's manual 2407_Rev02, 66 pages, for S70TR (S70TR, SPT5-W, SPT8-S, SPT8-SPK). It is a media CDN copy of the LG manual. The LG USA support page lists a newer English file dated 07/09/2026 that could not be downloaded.
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
EPREL registration number
Not available
Not available
Warranty
1 of 1 differ
Manufacturer warranty (source market)
Not available
Both are also in the API. Back to all soundbars.

















