The sound quality on the Hisense 65U8K is pretty decent for everyday watching. The built-in 2.1.2 multi-channel system provides clear and balanced audio, which works well for most TV shows and movies. Dialogues come through clearly, and the overall audio is smooth.

However, if you're into high-quality audio and want that cinema-like experience, the built-in speakers might not cut it. They lack a bit in power and depth, which is a common drawback with most TV speakers.

To really boost the sound, a soundbar can make a big difference. It would add richer bass and more detailed sound, making action movies and music streams much more enjoyable.

Plus, if you game, a soundbar can make the experience more immersive by highlighting subtle game sound effects.

So while the Hisense 65U8K is great in terms of its display and other features, if audio quality is important to you, an external sound system could be a good investment.

The Hisense 65U8K has an excellent contrast ratio thanks to its Mini-LED backlighting and Quantum Dot technology.

These features help produce deeper blacks and brighter whites, giving you a more immersive viewing experience. While the manufacturer doesn't always provide specific figures for the contrast ratio, our research shows that it performs exceptionally well in both dark and well-lit rooms, which is crucial for watching HDR content.

The peak brightness of over 2000 nits ensures the picture stays clear and vivid, even in bright environments. So, while we don't have an exact number, the contrast ratio on the Hisense 65U8K is definitely impressive.

Yep, the Hisense 65U8K does have HDMI 2.1 ports. This is really useful if you're into gaming on consoles like the PS5 or Xbox Series X since HDMI 2.1 supports 4K gaming at 120Hz, making your gameplay smoother with less lag.

Our research points out that this TV also packs other gaming goodies like a 144Hz refresh rate and FreeSync Premium Pro to further boost your experience.

Aside from the gaming features, the Hisense 65U8K uses Mini-LED tech for great brightness and contrast. It gets really bright—up to 1500 nits—so it's good even in well-lit rooms.

Plus, Dolby Vision IQ will adjust the picture settings based on the lighting in your room to optimize your viewing.

However, it's not all perfect. We've found that the Google TV interface can sometimes be a bit slow, which might get annoying.

There are also a few issues with how it handles HDR10+ content, and its viewing angles could be better; colors can get a bit dull if you're not watching it straight on.

Overall, it offers solid picture quality and lots of features, making it a good pick for both gamers and movie lovers.

Just keep an eye on user reviews to make sure its software quirks won't bother you too much.