(Image credit: Tom's Guide)

Owning one of the best soundbars is the best way to upgrade your home cinema with very little headache, and there's zero competition. Although serious hi-fi nerds poo-poo soundbars, some people don't have the time, space, or patience to deal with AVRs, floorstanders, wall-mounted speakers, and the like. Sometimes a soundbar is all you want.And boy, have I got the soundbar for you: the KEF XIO. The XIO is KEF's first foray into the home theater market, and it's a bullseye. Almost everything about this soundbar is excellent: the sound is seriously cinematic, it has powerful bass, and ridiculous Dolby Atmos. The main downside is the app, but if you're not the kind of person who uses soundbar apps, this will be a non-issue.Here's why I recommend the KEF XIO for everyone willing to invest in their home sound — and how you can save £200/20% right now.Sound as immersive as a movie theater

(Image credit: Tom's Guide)The KEF XIO is one of the most impressive soundbars I've ever tested, sonically. It has enviable width and height and makes movies come alive. I tested the soundbar with 4K UHD Blu-rays and standard 5.1 content on streaming services, and everything sounded excellent.In my 4-star review, I wrote, "Dolby Atmos performance is utterly fantastic, especially in "Top Gun: Maverick". Every single flying scene had unbeatable height and width, and the planes seemed to fly over my head. I was incredibly impressed with this."Certain movies were just made to be used with soundbars like this, and "Top Gun: Maverick" is one of them. If you grab this soundbar, you will not be disappointed if you use it with the right media.I added, "Flying scenes sounded outrageously good; the bass rumbled in my chest when the jets took off". I could feel the planes moving around the room, could feel the engines in my chest, could hear the radio dialogue coming from behind me. I was seriously, seriously impressed with this soundbar.Get instant access to breaking news, the hottest reviews, great deals and helpful tips.The KEF XIO has a 5.1.2 channel configuration, which means it has five front- and up-firing speakers, one built-in subwoofer, and two side-firing speakers (that act as surrounds). This configuration is what gives that genuine Dolby Atmos performance — you want at least 3.1.2.Another reason why the XIO sounds so good is its built-in, automatic calibration. KEF uses Intelligent Placement Technology built into the XIO. The soundbar uses microphones to map out your room (imagine a robot vacuum mapping out its territory) and then optimizes its sound based on things like placement height, wall size, and ceiling height.Automatic calibration is a must-have if you want to get the very best out of your soundbar: the JBL Bar 1300X is also capable of this, as is Klipsch's Flexus line.Save £200 if you're in the U.K.For my fellow Brits, you can save £200 on the KEF XIO right now. It's not a discount, per se; more of a long-term reward. If you purchase before July 2nd, you get £200 cashback.If you're in the U.S., you can save when you buy the XIO with a subwoofer and receiver — so a $3,399 purchase becomes $2,679. This isn't as good a deal as the U.K.'s — what if you don't want the subwoofer and receiver? — but I'll be on the lookout for Amazon deals.