Sony X77L 55" vs Sony X80K 55" (LED)
The Verdict
Both Sony models deliver solid 55-inch 4K experiences, but the X80K pulls ahead in several meaningful ways. Picture quality improves with the X80K's 500-nit brightness versus the X77L's 400-nit output, plus it adds Dolby Vision support for superior HDR content. Direct LED backlighting on the X80K provides better contrast control than the X77L's edge-lit design. Audio gets a modest bump with Dolby Atmos on the X80K, though both carry identical 20W 2.0-channel setups. Gaming performance is nearly identical (15ms vs 16ms input lag, both lacking VRR). The X77L edges slightly ahead on value at $549, offering 96% of the X80K's picture performance for $150 less. For budget-conscious buyers, the X77L is excellent. However, the X80K's superior brightness, Dolby Vision, and direct-lit backlight justify its premium for those prioritizing peak picture quality. Recommend the X80K for picture enthusiasts; choose the X77L if budget is primary.
Who Should Buy
Buy the Sony X77L 55" if…
- →Sony's color accuracy and motion handling are superior to budget competitors
- →Google TV with Chromecast built-in and Apple AirPlay 2
- →Four HDMI ports are generous at this price
Buy the Sony X80K 55" (LED) if…
- →Sony's X1 processor delivers noticeably better image processing than budget competitors
- →Dolby Vision and Dolby Atmos provide a premium HDR experience
- →Google TV with Chromecast built-in handles streaming beautifully
Category Scores
Pros & Cons
Sony X77L 55"
Pros
- Sony's color accuracy and motion handling are superior to budget competitors
- Google TV with Chromecast built-in and Apple AirPlay 2
- Four HDMI ports are generous at this price
- Motionflow XR produces smooth motion for sports and movies
- Clean, minimalist design fits any room
Cons
- 60Hz panel — not ideal for gaming or fast action
- No Dolby Vision — surprising for a Sony TV
- 400-nit brightness is low for HDR content
- No VRR for next-gen console gaming
Sony X80K 55" (LED)
Pros
- Sony's X1 processor delivers noticeably better image processing than budget competitors
- Dolby Vision and Dolby Atmos provide a premium HDR experience
- Google TV with Chromecast built-in handles streaming beautifully
- Triluminos Pro color engine produces natural, accurate colors
- Four HDMI ports for connecting multiple devices
Cons
- 60Hz panel with no VRR — not for gaming
- 500 nits brightness limits HDR impact
- Edge-lit LED without local dimming has poor contrast
- 20W audio is thin and tinny
- Bluetooth 4.2 limits wireless audio options
Full Specifications
| Spec | Sony X77L 55" | Sony X80K 55" (LED) |
|---|---|---|
| Body | ||
| VESA mount | 200 x 200mm | 300 x 300mm |
| Weight | 27.6 lbs | 29.1 lbs |
| Dimensions (w/ stand) | 48.5 x 30.9 x 10.6 inches | 48.7 x 30.5 x 9.4 inches |
| Dimensions | — | 48.7 x 28.3 x 3.0 inches |
| Audio | ||
| Output (watts) | 20 | 20 |
| Speakers | 2.0ch | 2.0ch |
| Dolby Atmos | ||
| Gaming | ||
| VRR (Variable Refresh Rate) | ||
| ALLM | ||
| Input lag (ms) | 15 | 16 |
| Display | ||
| HDR | HDR10, HLG | Dolby Vision, HDR10, HLG |
| Size | 55" | 55" |
| Type | LED | Direct LED (IPS / VA varies by size) |
| Resolution | 3840 x 2160 (4K UHD) | 3840 x 2160 (4K) |
| Refresh rate | 60Hz | 60Hz |
| Brightness (nits) | 400 | 500 |
| Smart TV | ||
| Os | Google TV | Google TV |
| Voice assistant | Google Assistant, Alexa, Apple AirPlay 2 | Google Assistant, Alexa |
| Processor | ||
| Chipset | X1 4K HDR Processor | — |
| Connectivity | ||
| Wi-Fi | Wi-Fi 5 (802.11ac) | Wi-Fi 5 |
| Ethernet | ||
| Bluetooth | 5.0 | 4.2 |
| USB ports | 2 | 2 |
| HDMI ports | 4 | 4 |
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This comparison is based on verified manufacturer specifications covering display, performance, camera, battery, and build quality. Scores are generated by analyzing specs across weighted categories on a 10-point scale. Learn more about our methodology.
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