As the name suggests: it's essentially a dongle-form version of the Fire TV box (from 2017) for sourcing Amazon, Netflix and other streaming services in Ultra-HD form, most commondly referred to as '4K'.
- Don't need 4K? Then check out the Full HD version of the Amazon Fire TV Stick or the standard Full HD Google Chromecast.
Crucially, the 4K Fire Stick is mega affordable. And with a bunch of additional dongle/stick-form devices also available on the market, that's important. Unlike the Now TV Stick, which maxes out at 720p on a lot of content (think: 720 horizontal lines to the picture), Amazon's device ups the ante by offering 2160p (that's triple, so you can imagine the picture quality difference).
Amazon's nearest rival is the Roku Streaming Stick+ – which is a good option if you don't want to be tied to Amazon services. Further up the chain there's the Google Chromecast Ultra (although there's no Amazon Prime Video there), with the top price spot occupied by the Apple TV 4K (if you're invested completely into the Apple ecosystem, anyway).
Design and remote
The Fire TV Stick 4K's design means it's small enough to just plug into the back of your TV via an HDMI port. Well, just about. The stick itself is quite fat, so neighbouring ports may become inaccessible. However, an HDMI extender is included if you don't or can't plug it in directly. As with other such streamers, power comes from a USB-to-mains-power adapter, also included.
We powered our 4K Stick from a USB port on a review TV – which, as we found out when switching TVs, isn't supported by all sets, so you may have to use the included mains plug adapter instead. The benefit with the USB-powered arrangement is that the Stick powers on with your TV rather than being permanently powered. Indeed, the included Amazon remote can be paired with many TVs to power the set on in tandem.
Amazon has slightly redesigned the functional-yet-unexciting Alexa remote compared to the earlier Fire TV products, as you can see in our picture below. There's now a standby button as well as volume up and down buttons on the bottom of the main body. There's an Alexa button at the top, which works fine – although we think the voice control button on the side of the Sky Q remote is a little better. The remote takes two AAA batteries (which are included) so you'll want some spares in a drawer for a future day when these inevitably die and you're stuck unable to finish that box set.
Amazon has also changed its logo on the remote and main body of the stick – it's now just the 'Amazon arrow'. Seems a trifle odd given Amazon's brand recognition, but we've noticed this trend on some other Amazon devices.
As an alternative to the remote, you can use an app on your phone, which can also be used for keyboard input. However, we think the inclusion of the remote is one of the more compelling aspects of the Fire TV devices versus their Google Chromecast equivalents; not everybody is happy using their mobile device as a controller for their TV and connection difficulties. Coincidentally, it is possible to connect the Fire TV Sticks to Ethernet using an optional adaptor.
Setup and navigation
Setting up the Fire TV 4K is a pretty standard process: you have to enter your Amazon account credentials and your Wi-Fi password using the arrow keys on the remote. Amazon has recently talked about its Echo devices being easier to setup via your Amazon account – and we'd expect it will do this for other products like future Fire TV devices, too, so there's less arrow key tapping.
Software hasn't been Amazon's strongest suit over the last few years – as we've noted with various Echo updates – but that doesn't apply to the Fire TV OS, which remains slick and very simple to use with a top-navigation and content suggestions, topics and groups as you scroll. It's similar to that on Fire tablets and always seems bulletproof.
Let there be no doubt that Amazon services are prioritised, but there is naturally support for other players and apps, and it's easy to position your favourites to the 'front' – we have Netflix and Plex sitting pride of place as the first two available.
We've had rare issues with connectivity, usually following internet downtime, but this can typically be fixed by finding the Restart option within the settings menu. Don't do a full-on reset (that's a different option) as the restart maintains all your sign-ins rather than totally stripping the Stick's apps and memory.
What you need for 4K, HDR and Dolby
The 2017 Fire TV offered 4K with high dynamic range (HDR) and Dolby Atmos support, but there was no Dolby Vision out of the box. This newer stick corrects this so HDR, HDR10, Dolby Vision, HLG and HDR10+ are all covered.
Note that you will need to have a compatible TV to get the most out of the Stick, with an HDMI capable of 4K (2160p) at 24/25/30/50/60Hz (most recent TVs will have HDCP 2.2 support, which you'll need for 4K content).
You'll need an HDR compatible TV to view HDR content, naturally, which is typical of most current 4K TVs – but not all. And if you're connecting via another device, like an AVR, then you need to ensure that's capable of 4K HDR passthrough.
For Dolby Atmos, you'll need a compatible Atmos sound system, while your TV will also need to be able to passthrough using an ARC-compatible HDMI port.
The Ultra-HD dream
There's no doubt that 4K HDR content from both Netflix and Amazon Prime Video are stunning on a compatible display. While Netflix has always labelled HDR content pretty well, Amazon had some catching up to do in this department.
Ultra-HD content is easily accessible through the Fire TV interface, but finding HDR content specifically isn't really covered: it's a case of most recent content is HDR compatible and it'll play as so, where available.
We know that more content will be coming, not least HLG 4K content from iPlayer. ITV Hub, All 4 and My 5 apps are also available – but none have yet announced any 4K plans, so it's Full HD (with upscaling by your TV) for the time being.
There are, of course, plenty of other apps, including Spotify, Curzon Home Cinema, TuneIn Radio, Twitch, Plex, and more – but it's likely you'll stay within the apps we've mentioned already, where the best content exists.
That's really the sell of having an Amazon Prime account: you can get free deliveries from Amazon, sure, but it's the shows like Sneaky Pete and others will keep you watching for hours on end.
Without a Prime Subscription the Fire Stick 4K doesn't shut down, you can still access your other apps no problem. You just might miss some of those top Amazon shows – but then you can always sign-up again as you please.
Alexa on the Fire Stick 4K
As before, Alexa voice control is surprisingly powerful on the Fire TV Stick 4K. Searching for programmes by actor, title or other details is really easy: just hold down the microphone button at the top of the remote and speak aloud what you're searching for.
This is really useful, too, as the Apps section of the main interface seemingly lacks a number that do exist – Plex wasn't there by manual search upon setup, for example – so you can use voice instead.
What's especially great is that it brings Alexa into your living room, whereas you might well have your main Alexa device in your kitchen, bedroom or study. So you're able to adjust the heating or ask for the weather just as you would on an Echo or, more accurately, just as you would on the Echo Show. As with all the other Echo devices, the best uses are simple; for more complicated stuff you might just as well get your phone out of your pocket.
It's the presence of 4K HDR content from Amazon Prime and Netflix that makes opting for the Fire TV Stick 4K worth it over and above the Full HD version – so long as you have a compatible TV, of course.
The value of the Amazon's device can't be questioned – compared to a device like the Apple TV 4K, the Amazon offering is far cheaper. The only justification for buying the Apple TV or Apple TV 4K is if you're invested completely into the Apple ecosystem, regularly look at Memories from your iCloud photo stream and AirPlay stuff to your TV. Equally, if you have an Android phone and you use Google services like Google Photos then you may be better off with the Chromecast Ultra – simply because it's a more seamless experience with your device.
Overall, though, the Amazon Fire TV Stick 4K is the ideal one-stop shop for all your content needs. If you're a Prime member then you get access to lots of great shows in superb quality. If you're not a Prime member then the 4K Stick is still a great access point to other streaming services, such as Netflix (also in 4K HDR).
If you want 4K HDR streaming, use Alexa a lot and like Amazon's Prime Video ecosystem then there is nothing better out there. And given how good some Prime content is right now, that makes this device a very compelling proposition indeed.
This review was first published in December 2018 and has been updated to reflect the changing market
Alternatives to consider
Roku Streaming Stick+
If you aren't allied to any particular ecosystem then the Roku option for 4K HDR makes a lot of sense. It is a little expensive compared to the Fire Stick 4K, however. What you get with Roku is supreme ease-of-use and streaming quality. As we mentioned in our review: "the important thing to figure out is what your TV can already do and whether you actually need to buy it. If you do, then it's an easy decision to make."
Apple TV 4K
Apple TV is over three times the price of the Fire TV 4K, so unless you're very particular about having Apple devices then it's an unnecessarily expensive option. iTunes does feature a big choice of 4K HDR content though – and you get it upgraded for free if you've bought it already. You can also get Amazon and Netflix content as well.
Google Chromecast Ultra
Chromecast devices are simple but brilliant. This 4K version is looking a little expensive compared to the Fire TV Stick 4K, but it still represents great value if you're an Android user regularly using Google apps who uses your phone as the centrepiece of everything. With no remote it's ironically a bit complicated for less knowledgeable users who aren't comfortable with the concept of casting from a device. And, as we mentioned, there's no Amazon Prime Video support – which is a big absence if that's what you're after!