The LeEco Super4 is a 4k LED TV. It has above-average picture quality and will be best suited in a darker environment. Unfortunately, the picture quality degrades when viewed from a slight angle. On the upside, both motion and input lag will suit most people's needs and the aluminum frame has great build quality. It's also known by the model codes L434UCNN, L554UCNN, and L654UCNN depending on the size.
Our Verdict
The LeEco Super4 is a decent TV for mixed usage. It has a very narrow viewing angle but picture quality is above average thanks to its very good contrast ratio. The TV will perform best when used in a darker environment since it's maximum brightness is not very high.
- Excellent contrast ratio.
- Fully featured and snappy smart platform.
- Very narrow viewing angle.
- Peak brightness is below average.
The LeEco Super4 is average for watching movies in a dark room. Blacks are deep and uniform, but the TV lacks any local dimming feature to enhance them even further.
The LeEco Super4 is a passable set for watching TV in a brighter environment. Narrow viewing angles deteriorate the picture quality at even a slight angle. Acceptable amount of reflections, but the TV doesn't get bright enough to counter-act brighter environments.
The LeEco Super4 is slightly above average for watching sports. Mediocre gray uniformity and poor viewing angle cause even colored fields to look blotchy and change color at the slightest angle change.
The LeEco Super4 is a good TV for gaming. Moderate amount of input lag and little motion blur, so everything feels fluid and snappy.
The LeEco Super4 is a decent TV for HDR Movies. Because of its low peak brightness, HDR content won't have much of a visual effect. It does have a wide color gamut which is good.
The LeEco Super4 is very good for HDR gaming. 4k input lag isn't affected by having an HDR input. Peak brightness is limited, however, so the visual effect won't be the most impactful.
The LeEco Super4 is a poor PC monitor. No chroma 4:4:4 support and narrow viewing angles make this TV a bad choice for a PC monitor.
Changelog
- Updated Mar 12, 2018: Converted to Test Bench 1.2.
- Updated Aug 10, 2017: Converted to Test Bench 1.1.
- Updated Mar 03, 2017: Review published.
- Updated Mar 01, 2017: Our testers have started testing this product.
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Differences Between Sizes And Variants
We tested the 55" (L554UCNN). For the most part, we expect our review to be valid for the 43" (L434UCNN) and 65" (L654UCNN).
If someone comes across a different type of panel or if their LeEco Super4 doesn't correspond to our review, let us know and we will update the review.
| Size | Model | Alternate Names |
| 43" | L434UCNN | X43 |
| 55" | L554UCNN | X55 |
| 65" | L654UCNN | X65 |
Popular TV Comparisons
While the LeEco Super4 TV isn't a bad TV, it faces fierce competition in its price range that's most often a better choice.
The Sony X900E is much better than the LeEco Super4. The X900E is brighter and has better reflection handling, making it a better choice for a well-lit room. The X900E has a local dimming feature that improves dark room viewing, and the X900E can remove judder from all 24p sources.
The Samsung NU7100 is a bit better than the LeEco Super4. The NU7100 has better black uniformity that makes dark room viewing more enjoyable. Motion looks clearer on the NU7100 due to the much better optional black frame insertion feature, and the NU7100 has less input lag. The LeEco Super4 has slightly better reflection handling and a faster response time.
The TCL 6 Series 2018 is much better than the LeEco Super4. The TCL is much brighter and has a local dimming feature that is great for dark room viewing. The TCL can consistently remove judder from all 24p sources, great for watching movies, and the TCL has a better black frame insertion feature that improves the clarity of motion. The TCL also has much lower input lag, which is great for gamers.
The TCL S517 is a bit better than the LeEco Super4. The TCL S517 can completely remove judder from all 24p sources, whereas the LeEco Super4 can't remove judder from any source. The S517 has much lower input lag, great for gaming or use as a PC monitor.
We buy and test dozens of TVs yearly, taking an objective, data-driven approach to deliver results you can trust. Our testing process is complex, with hundreds of individual tests that take over a week to complete. Most of our tests use specially designed test patterns that mimic real content, but we also use the same sources you have at home to ensure our results match the real-world experience. We use two main tools for our testing: a Colorimetry Research CR-100 colorimeter and a CR-250 spectroradiometer.
Test Results
Older Test Bench: This product has been tested using an older TV test methodology, before a major update. Some of the test results below aren't directly comparable with other TVs. Learn more
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