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LG SC9S Soundbar vs LG S90TR Soundbar

The S90TR is the stronger home-theater bar. It is a true 7.1.3 system with 13 drivers, 670 W, an 8-inch subwoofer and wireless rear speakers in the box, so it fills a room with real surround. The SC9S is a 3.1.3 bar with 400 W and no rear speakers included; its edge is the LG OLED evo C-series synergy bracket, which doubles as a TV stand or wall mount and places the bar for the C2/C3/C4. Owners rate the S90TR slightly higher, and the extra channels and included rears are the main reason.

  • Choose the LG SC9S if you own an LG OLED evo C-series TV and want a clean, bracket-mounted bar with Dolby Atmos and DTS:X without running rear speakers.
  • Choose the LG S90TR if you want full 7.1.3 surround with wireless rear speakers and a bigger subwoofer for movies and games in a larger room.

Prices

  • LG SC9S Soundbar: $319.00 at eBay (checked today)
  • LG S90TR Soundbar: $25.99 at Rent-A-Center (checked today)
  • Difference: the LG S90TR Soundbar is $293.01 cheaper than the LG SC9S Soundbar today
LG
LG SC9S 3.1.3 Channel Dolby Atmos Soundbar

LG SC9S Soundbar

LG SC9S 3.1.3 Channel Dolby Atmos Soundbar

4.4(951 ratings)
$319.00at eBayObserved Nov 9, 2026, 4:02 PM
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Visit eBay

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Pros
  • Synergy bracket fits LG OLED evo C2/C3/C4 as a stand or wall mount
  • Dolby Atmos and DTS:X with 24-bit/96 kHz high-resolution audio
  • AirPlay 2 plus Google Assistant and Siri support
  • HDMI eARC with 4K and Dolby Vision/HDR10 passthrough
  • WOW Orchestra syncs with a compatible LG TV
Cons
  • Only 3.1.3 channels and 9 drivers
  • Rear surround speakers are an extra purchase
  • Single HDMI port limits connected devices
  • Smaller subwoofer than the S90TR
LG
LG S90TR Soundbar

LG S90TR Soundbar

4.6(273 ratings)
$25.99at Rent-A-CenterObserved Nov 9, 2026, 2:54 PM
See all prices and details
Visit Rent-A-Center
Pros
  • True 7.1.3 surround with 13 drivers and 670 W
  • Wireless rear speakers and 8-inch subwoofer included
  • Up-firing center channel keeps dialogue clear
  • Dolby Atmos and DTS:X with 24-bit/96 kHz audio
  • One remote controls the bar and a compatible LG TV
Cons
  • Rear speakers need power outlets and placement behind the seating
  • No AirPlay 2 listed
  • HDMI connectivity is limited to eARC
  • Larger footprint than the SC9S

What separates them

LG SC9S SoundbarLG S90TR Soundbar
Channel configuration3.1.3 with 9 drivers7.1.3 with 13 drivers
Total output power400 W670 W
Rear surround speakersNot included; wireless surround ready with the SPQ8-S kit sold separatelyWireless rear speakers included in the box
SubwooferWireless, 17.2 lbWireless, 8-inch driver, 10 kg
Mounting and placementOLED evo C-series synergy bracket works as a TV stand or wall mountWall-mountable or table-top; wall bracket included
HDMIOne HDMI port with eARC and 4K/HDR passthroughHDMI eARC
Streaming and voiceWi-Fi, Bluetooth, AirPlay 2, Google Assistant and SiriWi-Fi, Bluetooth 5.1, Spotify Connect, Google Assistant
Owner rating4.4 out of 5 from 951 ratings4.6 out of 5 from 273 ratings

Price history

$1,199.99$25.99
Oct 30Nov 9
  • LG SC9S Soundbar: lowest $339.00 on Nov 5 at eBay; $399.00 on Nov 9.
  • LG S90TR Soundbar: lowest $25.99 on Nov 9 at Rent-A-Center.

Prices at every store

LG SC9S Soundbar

  • GreentoeNew

    In stockSold by TV's & Home Theater

    $399.00Free shippingObserved Nov 9, 2026, 2:55 PM
    Visit Greentoe
  • eBayNew

    Availability unknownSold by sampswalla (100% positive, 135 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.

    $319.00+ $50.00 shippingObserved Nov 9, 2026, 4:02 PM
    Visit eBay
  • AmazonNew

    Availability unknown

    As an Amazon Associate, Deal.ai earns from qualifying purchases.

    $499.99Free shippingObserved Nov 9, 2026, 2:54 PM
    Visit Amazon
  • neweggbusiness.comNew

    Availability unknown

    $699.00Observed Nov 4, 2026, 7:36 PM
    Visit neweggbusiness.com

Store links may earn us a commission.

All 20 stores and price history →

LG S90TR Soundbar

  • Rent-A-CenterNew

    In stock

    $25.99Free shippingObserved Nov 9, 2026, 2:54 PM
    Visit Rent-A-Center
  • Video & Audio CenterNew

    In stock

    $799.99Free shippingObserved Nov 9, 2026, 2:54 PM
    Visit Video & Audio Center
  • GreentoeNew

    Availability unknown

    $599.00Observed Nov 9, 2026, 2:54 PM
    Visit Greentoe
  • eBayNew

    Availability unknownSold by ioneub_0 (100% positive, 3 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.

    $700.00+ $94.29 shippingObserved Nov 9, 2026, 2:54 PM
    Visit eBay

Also available at

  • WalmartCheck price at Walmart
  • eBayCheck price at eBay
  • Improvemint FinancialCheck price at Improvemint Financial

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All 21 stores and price history →

Specs compared

SpecLG SC9S SoundbarLG S90TR Soundbar
WirelessYesYes
Configuration2 Channel2 Channel
ColorBlackBlack
Special PurposeSoundbarSoundbar
Assistant SupportGoogle Assistant, SiriGoogle Assistant
Dolby Atmos EnabledYesYes
ConnectivityBluetooth, Wi-Fi, USB, HDMI, Optical AudioBluetooth, Wi-Fi, HDMI, Ethernet, Optical Audio
Max Wattage30 W670 W
Depth12.3 in deep5.3" (Sound Bar)
ConnectionsOptical S/PDIF, HDMI, USB-AOptical S/PDIF, HDMI, USB-A
BluetoothYesYes, Bluetooth 5.1
Wireless TypeAirPlay 2, AirplayAirPlay 2
Show all 40 specsShow fewer specs
SpecLG SC9S SoundbarLG S90TR Soundbar
Weight (Subwoofer) (lb)17.222.1
No. of Optical S/PDIF (pcs)11
NFCNoNo
Surround Sound FormatsDolby Digital, Dolby Atmos, DTS:X, DTS Digital …Dolby Atmos
Depth (Subwoofer) (")12.315.9
Connection on SubwooferWirelessWireless
HDMI Pass-ThroughYesYes
Width (Soundbar) (")38.449.2
(ARC) Audio Return ChannelARC, eARCARC, eARC

What reviewers say

LG SC9S Soundbar

  • 4.4 / 5951 ratings

Owners rate it well overall at 4.4 out of 5 from 951 ratings. Most praise the Atmos effect, the clean look under an LG OLED and the easy HDMI eARC hookup. Complaints center on modest bass and height effects that depend on the room.

What people mention
  • SoundstagePraisedListeners say dialogue is clear and the bar spreads sound wider than its size suggests.
  • Atmos heightMixedHeight effects impress in low-ceiling rooms but are subtle in open spaces.
  • BassCriticisedOwners find the wireless subwoofer light on deep bass for action movies.
  • SetupMixedHDMI eARC is plug-and-play with LG TVs, but menus are less intuitive on other brands.

LG S90TR Soundbar

  • 4.6 / 5273 ratings

Rated 4.6 out of 5 from 273 ratings. Owners call the sound huge and clean at high volume, with the rear speakers and subwoofer doing most of the work. Complaints center on the bar's width, volume control and wired connection stability.

What people mention
  • Sound qualityPraisedOwners describe the output as huge and undistorted even at very high volume.
  • BassPraisedThe 8-inch subwoofer is called powerful and well integrated with the rest of the system.
  • Rear speakersPraisedBuyers say the wireless rears make a big difference to immersion.
  • SetupPraised

Questions and answers

Which is better for movies?
The S90TR. Its 7.1.3 layout, 13 drivers and included wireless rear speakers create surround behind and above you, which the 3.1.3 SC9S cannot do without buying the SPQ8-S kit.
Which sounds better in a small room?
The SC9S is easier to place in a small room because it has no rear speakers to position. The S90TR still wins on scale and bass, but its rears need space and outlets behind the couch.
Do I need an LG TV to use these?
No. Both work over HDMI eARC, optical or Bluetooth with any TV. The SC9S bracket and WOW Orchestra features are built around LG OLED evo C-series sets, and the S90TR's one-remote control works with compatible LG TVs.
Which has better bass?
The S90TR, with its 8-inch wireless subwoofer and 670 W total output against the SC9S's 400 W and smaller sub.
Is the SC9S worth stepping up to over the S90TR?
Only if the OLED synergy bracket matters to you. On sound, channels and included speakers the S90TR is the higher tier, so the SC9S is a step sideways for C-series owners, not up.
Which is easier to set up?
The SC9S, since it is a bar and sub only. The S90TR adds two rear speakers that need power and placement, though all connections are wireless.

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No. of HDMI (pcs)
1
1
3D PicturesNoNo
Simulated Surround SoundYesYes
Video Resolution2160p (4K Ultra HD)2160p (4K Ultra HD)
Soundbar Output Power Total (W)400.0670.0
Elements on Soundbar913
Depth (Soundbar) (")4.95.3
Power Consumption (Standby) (W)0.50.5
No. of HDMI Out (pcs)11
DSPNoNo
SubwooferYesYes
Height (Subwoofer) (")15.416.0
Wi-FiYesYes
App CompatibilityAirPlay 2, AirPlay, Chromecast for Audio, Tidal…AirPlay 2, Chromecast for Audio, Tidal, Spotify…
Remote ControlYesYes
App ControlYesYes
Channel Separation3.1.37.1.3
Automatic CalibrationYesYes
Weight (Soundbar) (lb)9.012.5
Pairing and auto sync with an LG TV are reported as quick and easy.