While the Sharp UH30U 4k TV is not exceptional at anything, it is an all-around good TV. Its main flaws are the oversharpness of upscaled content and the loss of color at an angle.
The Sharp UH30U UHD TV is a good overall TV, especially if you don't mind the over-sharpening on upscaled content or the limited viewing angle.
The TV has a feature named 'AquoDimming', but it isn't local dimming. Instead, it is simply a software-only smoothing feature.
As usual for most LED TVs, the colors lose saturation when you watch it at an angle. You can still see the picture, but it doesn't look as great as directly in-axis.
Update 01/06/2017: We have changed the methodology of testing. Since this is an old TV which we don't have anymore, we extrapolated the results from 2016 TVs.
The THX mode has good calibration by default, although nothing exceptional. See more details here.
To enable the reverse 3:2 pulldown without interpolation, set 'Film mode' to 'Standard'.
Under Game or PC mode, the input lag of the Sharp UH30 is 46.2ms, which is average. It shouldn't be a problem for most gamers.
Chroma 4:4:4 is supported in PC mode. For 4k @ 60hz @ 4:4:4, set the input HDMI range to 'Full'.
The Sharp UH30U also have a 3.5 mm audio In port not mentioned above.
The frequency response is good at lower volumes, but progressively worsens as the volume increases. At maximum volume the response is poor and pumping may be present. However, the loudness and low-end are pretty good.
The Sharp UH30U has the Android OS, with a very similar build as the one on Sony TVs. The OS needs a bit more work to catch up to the competitors, but it is improving fast.