LG C9 vs Sony A9G TV comparison 2021/04

You are in the market for a new OLED but don’t know which brand to choose? In this comparison we show the strengths and weaknesses of the OLED TVs LG C9 vs Sony A9G. Here you can find out which TV is better and which one is best for your needs.
LG OLED C9
Sony A9G
vs
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LG C9 and Sony A9G compared – Which TV is better?

Reflections Icon
Reflections
Image quality in bright environments and dealing with reflections
73%
LG OLED C9 55"
73%
Sony A9G 55"
Viewing Angle Icon
Viewing Angle
Picture quality when sitting at an angle to the TV - Also relevant when sitting very close in front of a large TV.
90%
LG OLED C9 55"
89%
Sony A9G 55"
SDR Image Quality Icon
SDR Image Quality
Picture quality when viewing material in SDR, i.e. anything that is not HDR.
96%
LG OLED C9 55"
95%
Sony A9G 55"
HDR Image Quality Icon
HDR Image Quality
Picture quality when viewing material in HDR, so everything from HDR, HDR10, HLG to HDR10+ & Dolby Vision.
84%
LG OLED C9 55"
79%
Sony A9G 55"
Movies & Series Icon
Movies & Series
Use of the TV for movies, series & documentaries - be it as stream, BluRay or in the TV program.
92%
LG OLED C9 55"
90%
Sony A9G 55"
Gaming Icon
Gaming
Gaming performance of the TV especially for responsive games with focus on PS5 and Xbox Series X
97%
LG OLED C9 55"
74%
Sony A9G 55"
Sports Icon
Sports
Suitability for watching soccer, Formula 1, Olympics and more, even with several persons
84%
LG OLED C9 55"
81%
Sony A9G 55"
Equipment Icon
Equipment
Smart TV features, connections and general equipment of the TV
89%
LG OLED C9 55"
78%
Sony A9G 55"
LG OLED C9 55"
Sony A9G 55"
Rating v2.5
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LG OLED C9 2019

OLED Panel
OLED Panel
LG OLED C9

The LG C9 is a fantastic OLED TV that offers the usual advantages of an OLED panel: Perfect blacks, an infinite contrast ratio and a very wide viewing angle. These advantages are enhanced by HDMI 2.1, which combined with a very low input lag provides great gaming performance. But the C9 is also a great choice for movies, TV shows and HDR content.

Sony A9G 2019

OLED Panel
OLED Panel
Sony A9G

Sony A9G is also a great OLED TV, but it has a different focus. The panel comes from LG Display itself, so the picture characteristics are more or less the same. However, the processor of the Sony AG9 is better than the C9 in terms of interpolation and image processing. In addition, the A9G offers sound from screen, which provides a fantastic sound experience. It’s less suitable for gaming, though.

77"
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Detailed comparison: LG C9 or Sony A9G

LG OLED C9
LG OLED C9 55"
Sony A9G
Sony A9G 55"
Reflections Icon
Reflections Comparison
LG C9 vs Sony A9G
73%
Reflections
Reflections visible
No layer against reflections
Contrast
infinite :1
Max. Brightness
830 Nits
Video technologies
73%
Reflections
Reflections visible
No layer against reflections
Contrast
infinite :1
Max. Brightness
690 Nits
Video technologies
Viewing Angle Icon
Viewing Angle Comparison
LG C9 vs Sony A9G
90%
Panel type
OLED Panel
OLED Panel
Viewing Angle
very wide
OLED Viewing Angle
Reflections
Reflections visible
Reflections visible
89%
Panel type
OLED Panel
OLED Panel
Viewing Angle
very wide
OLED Viewing Angle
Reflections
Reflections visible
Reflections visible
SDR image Icon
SDR image Comparison
LG C9 vs Sony A9G
96%
Panel type
OLED Panel
OLED Panel
Contrast
infinite :1
DCI-P3
ca. 85%
Energy consumption SDR
- not available -
95%
Panel type
OLED Panel
OLED Panel
Contrast
infinite :1
DCI-P3
ca. 77%
Energy consumption SDR
131 kWh / 1000 Hours
HDR image Icon
HDR image Comparison
LG C9 vs Sony A9G
84%
Panel type
OLED Panel
OLED Panel
Contrast
infinite :1
Max. Brightness
830 Nits
DCI-P3
ca. 85%
REC 2020
ca. 62%
Energy consumption HDR
- not available -
Video technologies
79%
Panel type
OLED Panel
OLED Panel
Contrast
infinite :1
Max. Brightness
690 Nits
DCI-P3
ca. 77%
REC 2020
ca. 65%
Energy consumption HDR
112 kWh / 1000 Hours
Video technologies
Movies & Series Icon
Movies & Series Comparison
LG C9 vs Sony A9G
92%
HDR Image Quality
SDR Image Quality
Environment & Reflections
Tuner
Analog (NTSC/PAL/SECAM) DVB-T DVB-T2 DVB-C DVB-S DVB-S2
Twin Tuner
Audio
2.2 Channels with 40 Watt
Audio formats
HDMI ARC / eARC
/
90%
HDR Image Quality
SDR Image Quality
Environment & Reflections
Tuner
Analog (NTSC/PAL/SECAM) DVB-T DVB-T2 DVB-C DVB-S DVB-S2
Twin Tuner
Audio
2.2 Channels with 60 Watt
Audio formats
HDMI ARC / eARC
/
Gaming Icon
Gaming performance Comparison
LG C9 vs Sony A9G
97%
Frequency
120Hz
Response Time
ca. 0.2ms
HDMI 2.1
4x Connections
Variable Refresh Rate
Input Lag 4K@60Hz +HDR
ca. 14ms
Input Lag 4K@120Hz
- not available -
74%
Frequency
120Hz
Response Time
ca. 0.2ms
HDMI 2.1
Variable Refresh Rate
Input Lag 4K@60Hz +HDR
ca. 27ms
Input Lag 4K@120Hz
- not available -
Sports Icon
Sports performance Comparison
LG C9 vs Sony A9G
84%
Frequency
120Hz
Response Time
ca. 0.2ms
DCI-P3
ca. 85%
81%
Frequency
120Hz
Response Time
ca. 0.2ms
DCI-P3
ca. 77%
Equipment Icon
Equipment Comparison
LG C9 vs Sony A9G
89%
Operating System
webOS 4.5
Bluetooth
Twin Tuner
Integrated soundbar
Audio
2.2 Channels with 40 Watt
HDMI ARC / eARC
/
Audio formats
USB recording PVR
HDMI 2.0
HDMI 2.1
4
USB 2.0
3
USB 3.0
Ethernet RJ45
1
3.5mm jack
1
Digital optical
1
Ci+ Slots
Ci+ 1.4
Timeshift
Apple Airplay
Apple Homekit
Assistants
Ambilight
One Connect Box
78%
Operating System
Android 8.0 Oreo
Bluetooth
Twin Tuner
Integrated soundbar
Audio
2.2 Channels with 60 Watt
HDMI ARC / eARC
/
Audio formats
USB recording PVR
HDMI 2.0
4
HDMI 2.1
USB 2.0
3
USB 3.0
Ethernet RJ45
1
3.5mm jack
1
Digital optical
1
Ci+ Slots
Ci+ 1.4
Timeshift
Apple Airplay
Apple Homekit
Assistants
Google Assistant
integriert
Amazon Alexa
kompatibel
Ambilight
One Connect Box
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Our conclusion:
Gaming OLED or sound monster?

LG C9 vs Sony A9G – Which TV should you buy? If you like gaming and want one of the best OLED TVs for movies, TV shows and HDR, the LG C9 is the right choice. In addition, the LG C9 offers HDMI 2.1, which makes it extremely future-proof. As a matter of fact, all OLED manufacturers use a panel from LG Display in the current market.

However, Sony has created an equal device with the A9G. The panel is the more or less the same, but the Sony processor provides better interpolation and image processing. Furthermore, thanks to Sony Acoustic Surface Audio+, the A9G integrates itself into existing sound systems and takes on the role of center speaker, which makes the A9G the better choice for films with powerful sound.

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LG OLED C9 2019
89%
LG OLED C9
  • Perfect blacks
  • Contrast of ∞:1
  • Very wide viewing angle
  • Clear movements
  • HDMI 2.1
  • Dolby Vision
  • Dolby Atmos
  • Automatic Brightness Limiter (ABL)
  • No Sound from Screen
Sony A9G 2019
83%
Sony A9G
  • Perfect blacks
  • Contrast of ∞:1
  • Very wide viewing angle
  • Clear movements
  • Dolby Atmos and DTS:X
  • HDMI eARC
  • Sound from Screen
  • Automatic Brightness Limiter (ABL)
77"
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