LG OLED42C66LB 42" 4K OLED evo Smart TV with Dolby Vision Dolby Atmos & webOS
LG

OLED42C66LB 42" 4K OLED evo Smart TV with Dolby Vision Dolby Atmos & webOS

The C6 in a desk-sized 42 inches.

TVs
9.2/10What the pros sayOutstandingExpert consensusSee score breakdown ↓
Buying call

The 42-inch C6 shrinks the 2026 C-series OLED into a size that doubles as a desktop gaming monitor. It gets the same new, faster processor, near-infinite contrast, Dolby Vision and Dolby Atmos, and the full gaming suite: four HDMI 2.1 ports, VRR and ALLM. As on the larger C6, the screen is reflective in bright rooms, there's no HDR10+ or DTS support, and occasional banding shows up.

Full verdict ↓
Lowest new price · 128GBCheck price0 retailers
See availability Check the store for today’s priceGet a price-drop alert
Compare prices at
Editor testedHands-on testing and real-world use
Real-world useBased on everyday testing, not a spec sheet
Unbiased reviewIndependent and objective, sources shown
OLED42C66LB 42" 4K OLED evo Smart TV with Dolby Vision Dolby Atmos & webOSCheck priceSee price
Key specs
HDR
High Dynamic Range 10 (HDR10) · Hybrid Log-Gamma (HLG) · Dolby Vision
Panel type
OLED evo
Highlights

Specs that matter

Display
Size
106.74" (2711 mm)
Resolution
3840 x 2160 pixels
At a glance

Product highlights

Verified attributes, grouped for quick scanning.

Display106.74" (2711 mm)
54 attributes · See all specifications
Price & availability

Where to buy

Prices from trusted US retailers, updated daily.

Set price alert

We may earn a commission from qualifying purchases. Prices and availability are stored at the time of last verification and may change.

0 price points tracked.
Check the store for today’s price.
Buying decision

Should you buy it?

The 42-inch C6 shrinks the 2026 C-series OLED into a size that doubles as a desktop gaming monitor. It gets the same new, faster processor, near-infinite contrast, Dolby Vision and Dolby Atmos, and the full gaming suite: four HDMI 2.1 ports, VRR and ALLM. As on the larger C6, the screen is reflective in bright rooms, there's no HDR10+ or DTS support, and occasional banding shows up.

Best for

Gamers who want an OLED desk monitor or a small-room TV

Not for

Bright rooms or HDR10+ libraries

Main strengthPerfect blacks and brilliant OLED picture
Main weaknessReflective screen
Reasons to buy
Perfect blacks and brilliant OLED picture
Compact 42-inch size works as a gaming monitor
Four HDMI 2.1 ports with VRR and ALLM
New faster processor
Reasons to avoid
Reflective screen
No HDR10+ or DTS support
Occasional banding
Measured view9.2/10What the pros say.
Head to head

How it stacks up

Open a comparison for the full side-by-side view.

Choose a gadget
LG OLED42C66LB 42" 4K OLED evo Smart TV with Dolby Vision Dolby Atmos & webOS
This deviceOLED42C66LB 42" 4K OLED evo Smart TV with Dolby Vision Dolby Atmos & webOS
VS
LG OLED48C65LA
AlternativeLG OLED48C65LA
Display
106.742"121.948"
Full comparison
LG OLED42C66LB 42" 4K OLED evo Smart TV with Dolby Vision Dolby Atmos & webOS
This deviceOLED42C66LB 42" 4K OLED evo Smart TV with Dolby Vision Dolby Atmos & webOS
VS
LG OLED83B6ELB
AlternativeLG OLED83B6ELB
Display
106.742"2.1183"
Full comparison
LG OLED42C66LB 42" 4K OLED evo Smart TV with Dolby Vision Dolby Atmos & webOS
This deviceOLED42C66LB 42" 4K OLED evo Smart TV with Dolby Vision Dolby Atmos & webOS
VS
LG OLED42C65LA
AlternativeLG OLED42C65LA
Display
106.742"106.742"
Full comparison
Same category

Alternatives worth a look

Other phones in the database, with their stored scores and prices.

All tvs →
OLED42C65LA—
LGOLED42C65LA106.74" (2711 mm)
OLED83B6ELB—
LGOLED83B6ELB2.12" (54 mm)
OLED48C65LA—
LGOLED48C65LA121.95" (3097 mm)
OLED65C65LA—
LGOLED65C65LA165.17" (4195 mm)
Product data

Full specifications

54 attributes, grouped for quick scanning. Spot a wrong value? Hit the next to it.

Display

HDR
  • High Dynamic Range 10 (HDR10)
  • Hybrid Log-Gamma (HLG)
  • Dolby Vision
Panel type
OLED evo
Aspect ratio
16:9

Picture Features

Game mode
✓

Sound

Channels
2.0 channels
Audio formats
Dolby Atmos
eARC / ARC
✓

Smart TV

Smart TV
✓
Platform
WebOS
Apps
  • YouTube
  • All 4
  • Amazon Prime Video
  • Rakuten TV
  • Apple TV
  • BBC iPlayer
  • My5
  • NOW TV
  • Netflix
  • Paramount+
  • Twitch
  • ITV X
  • Chili
  • DAZN
  • Disney+
AirPlay 2
✓
Subtitles
✓

Tuner

Tuner
Analog & digital

Ports

HDMI ports
4
Ethernet
✓

Connectivity

Wi‑Fi
Yes
Bluetooth
5.3

Design

VESA mount
✓
VESA size
300 x 200 mm
Introduced
2026
Vote & discuss

Community says

No reader votes on the OLED42C66LB 42" 4K OLED evo Smart TV with Dolby Vision Dolby Atmos & webOS yet. Votes happen on head-to-heads: pick a matchup and say which one you would buy.

Reviewed this gadget on your site or channel? Submit your review →

OLED42C66LB 42" 4K OLED evo Smart TV with Dolby Vision Dolby Atmos & webOSNo store price yetSpecs
LG OLED42C66LB 42" 4K OLED evo Smart TV with Dolby Vision Dolby Atmos | Gadget Clash