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  1. Home
  2. Soundbar
  3. Compare
  1. Table of Contents
  2. Top
  3. Main Differences
  4. Design
    1. Style - Bar
    2. Style - Subwoofer
    3. Style - Satellites
    4. Dimensions - Bar
    5. Dimensions - Subwoofer
    6. Dimensions - Satellites
    7. Mounting
    8. Build Quality
    9. In The Box
    10. Back - Bar
    11. Back - Subwoofer
    12. Back - Satellites
  5. Sound
    1. Stereo Frequency Response
    2. Stereo Frequency Response With Preliminary Calibration
    3. Stereo Soundstage
    4. Stereo Dynamics
    5. Stereo Total Harmonic Distortion
    6. Center
    7. Surround 5.1
    8. Height (Atmos)
    9. Sound Enhancement Features
  6. Connectivity
    1. Inputs/Outputs - Bar
    2. Audio Format Support: ARC/eARC
    3. Audio Format Support: HDMI In
    4. Audio Format Support: Optical
    5. Audio Latency: ARC
    6. Audio Latency: HDMI In
    7. Audio Latency: Optical
    8. Video Passthrough To TV
    9. Wireless Playback
    10. Connectivity - Subwoofer
    11. Connectivity - Satellites
  7. Additional Features
    1. Interface
    2. Bar Controls
    3. Remote
    4. Voice Assistants Support
    5. App
    6. Other Features
  8. Comments

LG SN9YG vs Sonos Arc

Side-by-Side Comparison

Products

LG SN9YG
Sonos Arc

Tested using Methodology v1.0

Updated Jan 12, 2024 07:44 PM

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Tested using Methodology v1.3

Updated Nov 28, 2024 02:21 PM

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LG SN9YG Picture
Sonos Arc Picture
Channels
5.1.2
Channels
5.0.2

Variants

  • SN9YG (Black)
  • Arc (Black)
  • Arc SL (Shadow Edition)
  • Arc (White)

Review

See LG SN9YG Review
See Sonos Arc Review
0 
3 

Our Verdict

LG SN9YG

Sonos Arc

The LG SN9YG is a better soundbar than the standalone Sonos Arc. The LG has a dedicated subwoofer reproducing a more extended low-bass. It also has EQ presets, a Full HDMI In port, and wireless playback options. However, the Sonos offers better soundstage, surround, and Atmos performances. You can also upgrade it to the Sonos Arc with Sub + One SL Speakers for better performance.

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Black
SN9YG
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Black
Arc
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Black
SN9YG
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Shadow Edition
Arc SL
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Black
SN9YG
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White
Arc
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Black
SN9YG
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Black
SN9YG
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SN9YG
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Main Differences for
Mixed Usage

Threshold 

0.10

Mixed Usage 

7.8
7.4

Stereo Frequency Response 
 

8.2
7.2

Audio Format Support - Full HDMI In 
 

10
0.0

Stereo Soundstage 
 

7.0
8.0

Full Comparison

Design

Style - Bar  

Style photo - bar  

LG SN9YG Style photo - bar
Sonos Arc Style photo - bar
Show Text 

Style - Subwoofer  

Style photo - sub  

LG SN9YG Style photo - sub
Sonos Arc Style photo - sub

Sub Wireless 
 

Yes
No

Enclosure 
 

Ported
No Subwoofer
Show Text 

Style - Satellites  

Style photo - satellites  

LG SN9YG Style photo - satellites
Sonos Arc Style photo - satellites

Satellite Wireless 
 

No
No
Show Text 

Dimensions - Bar  

Dimensions photo - bar  

LG SN9YG Dimensions photo - bar
Sonos Arc Dimensions photo - bar

Width  

48.0" (121.9 cm)
44.9" (114.1 cm)

Height  

2.2" (5.6 cm)
3.4" (8.7 cm)

Depth  

5.7" (14.4 cm)
4.7" (12.0 cm)
Show Text 

Dimensions - Subwoofer  

Dimensions photo - sub  

LG SN9YG Dimensions photo - sub
Sonos Arc Dimensions photo - sub

Width  

8.7" (22.1 cm)
N/A

Height  

15.4" (39.0 cm)
N/A

Depth  

12.3" (31.2 cm)
N/A
Show Text 

Dimensions - Satellites  

Dimensions photo - satellites  

LG SN9YG Dimensions photo - satellites
Sonos Arc Dimensions photo - satellites

Width  

N/A
N/A

Height  

N/A
N/A

Depth  

N/A
N/A
Show Text 

Mounting 
 

Bar Mounting Holes  

Sonos Arc Bar Mounting Holes

Satellite Mounting Holes  

Sonos Arc Satellite Mounting Holes

Mountable Bar 
 

Yes

Bar Brackets Included 
 

No

Mountable Satellites 
 

No

Satellite Brackets Included 
 

No
Show Text 

Build Quality 
 

8.0
8.0

Build quality photo  

LG SN9YG Build quality photo
Sonos Arc Build quality photo
Show Text 

In The Box 
 

In The Box photo   

LG SN9YG In The Box photo
Sonos Arc In The Box photo

HDMI Cable Length 
 

N/A

Digital Optical Cable Length 
 

1.5 m (4.9 ft)
Show Text 

Back - Bar  

Back photo - bar  

LG SN9YG Back photo - bar

Bar Mounting 
 

Universal (holes on underside)
Show Text 

Back - Subwoofer  

Back photo - sub  

LG SN9YG Back photo - sub

Enclosure 
 

Ported
No Subwoofer
Show Text 

Back - Satellites  

Back photo - satellites  

LG SN9YG Back photo - satellites

Mounting 
 

No
Show Text 
Sound

Stereo Frequency Response 
 

8.2
7.2

Stereo Setup  

LG SN9YG Stereo Setup
Sonos Arc Stereo Setup

Raw Frequency Response  

See details on graph tool
See details on graph tool

Frequency Response Small  

See details on graph tool
See details on graph tool

Channels 
 

5.1.2
5.0.2

Tested Preset 
 

Standard
No Preset

Slope 
 

-0.71
0.37

Standard Error 
 

3.30 dB
3.33 dB

Low-Frequency Extension 
 

29.5 Hz
51.1 Hz

High-Frequency Extension 
 

19.9 kHz
19.9 kHz
Show Text 

Stereo Frequency Response With Preliminary Calibration 
 

8.2
7.2

Frequency Response Calibrated  

See details on graph tool
See details on graph tool

Suggested Preset 
 

Standard
No Preset

Suggested Bass Setting 
 

0
0

Suggested Treble Setting 
 

0
-3

Slope 
 

-0.71
-0.09

Standard Error 
 

3.30 dB
3.08 dB

Low-Frequency Extension 
 

29.5 Hz
51.1 Hz

High-Frequency Extension 
 

19.9 kHz
19.9 kHz
Show Text 

Stereo Soundstage 
 

7.0
8.0

Crosstalk  

See details on graph tool
See details on graph tool

Crosstalk Error 
 

2.53 dB
2.28 dB
Show Text 

Stereo Dynamics 
 

7.7
8.1

Dynamic Range Compression  

See details on graph tool
See details on graph tool

SPL @ Max Volume 
 

89.5 dB SPL
91.6 dB SPL

DRC @ 90dB 
 

0.28 dB

DRC @ Max Volume 
 

0.95 dB
0.75 dB
Show Text 

Stereo Total Harmonic Distortion 
 

6.9

THD  

See details on graph tool

Weighted THD @ 80dB 
 

0.67

Weighted THD @ Max Volume 
 

3.62
Show Text 

Center 
 

7.5
7.8

Center Setup  

LG SN9YG Center Setup
Sonos Arc Center Setup

Frequency Response  

See details on graph tool
See details on graph tool

Localization 
 

Discrete
Discrete

Slope 
 

-0.53
-0.40

Std. Err. 
 

4.37 dB
2.94 dB

SPL @ Max Volume 
 

87.4 dB SPL
76.5 dB SPL

Weighted THD @ 80dB 
 

3.73
0.32

Weighted THD @ Max Volume 
 

6.56
1.56
Show Text 

Surround 5.1 
 

5.3
5.7

Surround Setup  

LG SN9YG Surround Setup
Sonos Arc Surround Setup

Frequency Response  

See details on graph tool
See details on graph tool

Localization 
 

Phantom (Side Firing, Bar)
Phantom (Side Firing, Bar)

Slope 
 

0.13
0.01

Std. Err. 
 

5.99 dB
3.27 dB

SPL @ Max Volume 
 

92.8 dB SPL
75.1 dB SPL

Weighted THD @ 80dB 
 

1.58
0.39

Weighted THD @ Max Volume 
 

3.32
0.98

7.1 Rears 
 

No
No
Show Text 

Height (Atmos) 
 

5.4
6.1

Height Setup  

LG SN9YG Height Setup
Sonos Arc Height Setup

H Frequency Response  

See details on graph tool
See details on graph tool

Localization 
 

Phantom (Up Firing, Bar)
Phantom (Up Firing, Bar)

Slope 
 

1.38
0.55

Std. Err. 
 

6.32 dB
2.91 dB

SPL @ Max Volume 
 

89.1 dB SPL
62.0 dB SPL

Weighted THD @ 80dB 
 

0.34
1.07

Weighted THD @ Max Volume 
 

1.26
0.18
Show Text 

Sound Enhancement Features 
 

9.8
5.7

Room Correction 
 

Yes
Yes

Dialogue Enhancement 
 

Yes
Yes

Auto-Volume/Night Mode 
 

Yes
Yes

Subwoofer Level Adjustment 
 

Yes
No

Bass Adjustment 
 

Yes
Yes

Treble Adjustment 
 

Yes
Yes

EQ 
 

Presets
No

Surround Level Adjustment 
 

Yes
No

Rear Level Adjustment 
 

Yes
No

Height Level Adjustment 
 

Yes
Yes

Virtual Surround 
 

Yes
No
Show Text 
Connectivity

Inputs/Outputs - Bar 
 

Physical Connections Bar Photo 1  

LG SN9YG Physical Connections Bar Photo 1
Sonos Arc Physical Connections Bar Photo 1

Physical Connections Bar Photo 2  

LG SN9YG Physical Connections Bar Photo 2
Sonos Arc Physical Connections Bar Photo 2

Optical Audio In 
 

1
Adapter into HDMI ARC

HDMI Out 
 

1 (shared)
eARC

HDMI 2.1 Class Bandwidth 
 

No

Full HDMI In 
 

1
No

Analog Audio In 3.5mm (Aux) 
 

No
No

RCA In 
 

No
No

USB for Files 
 

1
No

Ethernet 
 

No
1

Subwoofer Output 
 

No

HDMI ARC 
 

1 (shared)
Show Text 

Audio Format Support: ARC/eARC 
 

10
9.6

Dolby Atmos 
 

Yes
Supported

Dolby Digital 
 

Yes
Supported

Dolby Digital Plus 
 

Yes
Supported

Dolby TrueHD 
 

Yes
Supported

DTS 
 

Yes
Supported

DTS:X 
 

Yes
Not Supported

eARC 
 

Yes

DTS-HD MA 
 

Yes
Not Supported

PCM Channels 
 

Up To 7.1

5.1 PCM (eARC only) 
 

Yes
Show Text 

Audio Format Support: HDMI In 
 

10
0.0

Dolby Atmos 
 

Yes
Not Supported

Dolby Digital 
 

Yes
Not Supported

Dolby Digital Plus 
 

Yes
Not Supported

Dolby TrueHD 
 

Yes
Not Supported

DTS 
 

Yes
Not Supported

DTS:X 
 

Yes
Not Supported

DTS-HD MA 
 

Yes
Not Supported

PCM Channels 
 

Not Supported

5.1 PCM 
 

Yes
Show Text 

Audio Format Support: Optical 
 

10
10

Dolby Digital 
 

Yes
Supported

DTS 
 

Yes
Supported

PCM Channels 
 

2.0
Show Text 

Audio Latency: ARC 
 

8.5

ARC Latency Video  

PCM-2.0 ch 
 

42 ms

PCM-5.1 ch 
 

41 ms

Dolby MAT (PCM) Atmos 
 

59 ms

Dolby Digital 
 

92 ms

Dolby Digital Plus 
 

101 ms

Dolby Digital Plus Atmos 
 

101 ms
Show Text 

Audio Latency: HDMI In 
 

7.8
0.0

HDMI Latency Video  

Latency Video  

PCM-2.0 ch 
 

N/A

PCM-5.1 ch 
 

N/A

Dolby MAT (PCM) Atmos 
 

N/A

Dolby Digital 
 

N/A

Dolby Digital Plus 
 

N/A

Dolby Digital Plus Atmos 
 

N/A

ARC 
 

50 ms

Optical 
 

55 ms

Full HDMI In 
 

104 ms

Audio Latency: Optical 
 

9.0

Optical Latency Video  

PCM-2.0 ch 
 

99 ms

Dolby Digital 
 

129 ms
Show Text 

Video Passthrough To TV 
 

0.0
0.0

1080p Max Refresh Rate 
 

Not Supported

1080p @ 4:4:4 Max Refresh Rate 
 

Not Supported

4k Max Refresh Rate 
 

Not Supported

4k @ 120Hz @ 10-Bit 
 

Not Supported

4k @ 4:4:4 Max Refresh Rate 
 

Not Supported

8k Max Refresh Rate 
 

Not Supported

HDR10 Passthrough 
 

Yes
No

HDR10+ Passthrough 
 

No

Dolby Vision Passthrough 
 

No

HDMI Forum VRR Passthrough 
 

No

4k @ 60 Hz Passthrough 
 

Yes

FreeSync Passthrough 
 

No

G-SYNC Passthrough 
 

No

ALLM Passthrough 
 

No

4k @ 60 Hz @ 10 bit Passthrough 
 

Yes

4k @ 60 Hz @ 4:4:4 Passthrough 
 

Yes
Show Text 

Wireless Playback 
 

9.0
3.0

Bluetooth 
 

Yes
No

Wi-Fi Playback 
 

Yes
Yes

Chromecast built-in 
 

Yes
No

Apple AirPlay 
 

No
Yes

Spotify Connect 
 

Yes
Show Text 

Connectivity - Subwoofer 
 

Physical inputs subwoofer photo 1  

LG SN9YG Physical inputs subwoofer photo 1

Physical controls subwoofer photo 1  

LG SN9YG Physical controls subwoofer photo 1

Sub Wireless 
 

Yes
No
Show Text 

Connectivity - Satellites 
 

Physical inputs satellites photo 1  

LG SN9YG Physical inputs satellites photo 1

Physical controls satellites photo 1  

LG SN9YG Physical controls satellites photo 1

Sat Wireless 
 

No
No
Show Text 
Additional Features

Interface 
 

Interface photo  

LG SN9YG Interface photo
Sonos Arc Interface photo

Display 
 

Yes
No
Show Text 

Bar Controls 
 

Controls photo  

LG SN9YG Controls photo
Sonos Arc Controls photo
Show Text 

Remote  

Remote photo  

LG SN9YG Remote photo
Sonos Arc Remote photo

Universal Remote 
 

No
Show Text 

Voice Assistants Support 
 

Amazon Alexa 
 

No
Yes (Built-in)

Google Assistant 
 

Yes (Built-in)
Yes (Built-in)

Apple Siri 
 

No
No

Microphone Mute 
 

Yes
Show Text 

App 
 

App image  

LG SN9YG App image

App Name  

LG Wi-Fi Speaker

iOS  

Yes

Android  

Yes

Acts As A Remote 
 

Yes

Controls Soundbar's Settings 
 

All

Casts Device Files 
 

Yes
Show Text 

Other Features 
 

Power Saving 
 

Standby

HDMI CEC (TV Remote Control) 
 

Yes
Show Text 

Check Price

Black
SN9YG
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Black
Arc
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Black
SN9YG
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Shadow Edition
Arc SL
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Black
SN9YG
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White
Arc
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SN9YG
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SN9YG
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SN9YG
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LG SN9YG

Sonos Arc

Comments

  1. Comparison
 • Posted 1 year ago

LG SN9YG vs Sonos Arc: Main Discussion

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