This 42-inch OLED 4K UHD TV from Sony is internet enabled, and uses the "Google TV" operating system. It includes a built-in Google Assistant virtual assistant. Sony claims this model will also work with external Google Assistant, Amazon Alexa, and Apple Siri HomeKit devices. It also includes an ATSC 3.0 tuner for receiving "Next-Gen TV" signals. CR's tests found it had Excellent picture quality, a very wide viewing angle, but limited HDR performance.

The Sony A90K is an excellent TV for mixed usage. It looks best in a dark room, thanks to its near-infinite contrast ratio and perfect black uniformity, with no blooming around bright objects. It makes it a superb choice for watching movies or gaming in the dark. It's also great for watching shows or sports in a bright room, as it has superb reflection handling and passable peak brightness. It has a wide viewing angle, which is great if you have a wide seating arrangement and want to watch sports with a group of friends, as the image remains consistent when viewed from the side. Finally, it's a very good choice for use as a PC monitor, but there are some text clarity issues due to its WRBG subpixel layout.