If you are looking for the best Android TV box in 2026, the Ugoos SK4 Pro deserves your full attention. Ugoos has always been a top performer in this space. However, this new Pro model takes things to a whole new level. From Widevine L1 to full Dolby and DTS audio passthrough, this box is loaded. So let’s break it all down.
What’s Inside the Box?
First things first, let’s talk about what you get. The package includes the SK4 Pro unit itself, a Bluetooth air mouse voice remote, an HDMI cable, a 12V 1A DC power supply, and a user guide. Notably, nothing has changed from the previous model in terms of package contents. However, the device itself tells a very different story.
A Fresh New Look
At first glance, the SK4 Pro looks similar to its predecessor. Look closer though and you will notice the difference immediately. The glossy plastic body now features a 3D surface effect that gives it a premium feel. Worth noting is that this effect can trigger Visually Induced Motion Sickness in sensitive individuals. Therefore, take note if that applies to you.
For connectivity, you get one HDMI 2.1 port, a USB Type-C port, a USB 2.0 port, optical audio, and a barrel-type DC input. Additionally, the reset button is conveniently accessible and not hidden inside an AV port. Unfortunately, the Ethernet port is not gigabit. As a result, that is a missed opportunity at this price point.
The Powerhouse Inside the Ugoos SK4 Pro
Now here is where things get exciting. The Ugoos SK4 Pro is powered by the Amlogic S905X5M-K CPU. This is the K variant, and it makes a significant difference in features. Specifically, it runs on a quad-core Cortex A55 processor clocked at up to 2.51 GHz. Paired with that is the Mali G310 V2 GPU supporting OpenGL ES 3.2 and Vulkan 1.3.
Furthermore, you get 4GB of DDR5 RAM and 64GB of internal storage. The RAM copy speed hits an impressive 4,480 MB/s. Meanwhile, storage read speeds reach 237 MB/s with write speeds of 96 MB/s. In other words, this box handles everything you throw at it with ease.
Android 14 With Full Google Certification
One of the biggest wins here is the software experience. The SK4 Pro runs Android 14 on the mobile version, which brings a host of benefits. For instance, you get the familiar drag-and-drop interface, a recent apps button, pulldown notifications, and multiple scrollable home screen pages. As a result, it feels just like using a smartphone on your TV.
Moreover, Ugoos delivers consistent firmware updates that keep the device running at its best. During testing, two back-to-back updates were received immediately after setup. Clearly, that level of support is rare in the Android TV box market. In fact, it shows Ugoos takes long-term software support more seriously than most of its competitors.
Widevine L1 and HDCP 2.3: A Game Changer
This is arguably the biggest upgrade on the Ugoos SK4 Pro. It comes with Google Widevine L1 certification and HDCP 2.3 protection. So what does that mean for you? Simply put, you can stream your favorite content in full HD and 4K from platforms like Netflix, Amazon Prime, and Disney Plus without any degradation in quality. Previously this was a serious weakness in many Android boxes. Not anymore.
To learn more about how Widevine DRM works and why it matters for streaming quality, visit the official Google Widevine page.
4K HDR and Dolby Vision Video Playback
The SK4 Pro handles 4K video playback flawlessly across every major format. Specifically, it supports HDR10, HLG, AV1, and Dolby Vision without any issues. Additionally, HDR10 Plus content falls back cleanly to HDR10, meaning no black screens or compatibility errors.
Even more impressive is its handling of the notoriously difficult m2ts format. Historically, this ripped DVD format has caused serious playback issues on Android boxes. Nevertheless, the SK4 Pro plays it back smoothly without a single hiccup. Consequently, that alone sets it apart from every competitor in this price range.
To understand the difference between HDR10, Dolby Vision, and HLG, the Rtings HDR format comparison guide is an excellent reference.
AISR and AIPQ: Next Level Picture Quality
One feature that truly sets the Ugoos SK4 Pro apart from the competition is its support for both AISR and AIPQ. To begin with, AISR stands for Artificial Intelligence Super Resolution. Simply put, it uses AI processing to upscale lower resolution content to near 4K quality in real time. As a result, even your older 1080p videos look significantly sharper and more detailed on a 4K display. AIPQ, on the other hand, stands for Artificial Intelligence Picture Quality. Specifically, it works by intelligently analyzing and enhancing contrast, brightness, and color accuracy on the fly. Together, these two AI-driven technologies deliver a picture quality that goes far beyond what the hardware alone could achieve. Furthermore, both features can be adjusted directly from the settings menu, giving you full control over your viewing experience. In other words, the Ugoos SK4 Pro does not just play your content, it actively makes it look better. Consequently, for movie lovers and casual viewers alike, this is a feature that is genuinely hard to go back from once you experience it.
To learn more about AI Super Resolution technology and how it works, visit the Amlogic official technology page. For a deeper understanding of AI picture quality enhancement in modern displays and devices, the Digital TV Research resource is also worth exploring.
Surround Sound Audio That Delivers
When it comes to audio, the Ugoos SK4 Pro leaves absolutely nothing on the table. It supports full audio passthrough for every major format available today. Specifically, that includes Dolby Atmos, Dolby Digital Plus, Dolby Digital, Dolby TrueHD, DTS Virtual X, DTS HD Master Audio, and DTS-X. Furthermore, every single format was tested and confirmed working perfectly.
However, there is one limitation worth mentioning. Switching to optical audio removes surround sound support entirely, leaving you with PCM only. Therefore, for the best possible audio experience, always stick with HDMI output.
For a deeper understanding of audio passthrough and how it works with AV receivers, check out this audio passthrough explained guide by Sound On Sound.
Wireless and Network Performance
The SK4 Pro uses a Realtek RTL 8852 Wi-Fi 6 AX adapter with dual band 2.4 GHz and 5 GHz support. During testing, the 5 GHz band maxed out the full available network speed impressively. Meanwhile, the 2.4 GHz band averaged a solid 158 Mbps, which is well above average for this class of device. As a result, streaming in 4K over Wi-Fi is completely reliable and consistent.
On the other hand, the LAN port averaged only around 90 Mbps, confirming it is not gigabit. For a box at this performance level, that is indeed disappointing. Nevertheless, the strength of its Wi-Fi 6 performance more than compensates for most users in most situations.
To learn more about Wi-Fi 6 and what it means for your home network, the Wi-Fi Alliance official Wi-Fi 6 overview is a great starting point.
Benchmark Results
Numbers always tell the real story. In Geekbench 5, the SK4 Pro scored 196 single core and 688 multicore. Additionally, in 3DMark it achieved 616 with an average of 3.69 fps. In Antutu version 11, furthermore, it scored an impressive 255,937. While these numbers place it only slightly ahead of the original SK4, the real improvements are clearly in features rather than raw performance.
For context on how these scores compare to other Android devices, you can explore the Antutu benchmark rankings database.
Should You Buy the Ugoos SK4 Pro?
Absolutely yes. The Ugoos SK4 Pro is without question the most feature-complete Android TV box available at its price point today. Widevine L1, full Dolby and DTS passthrough, Android 14, Wi-Fi 6, and consistent firmware updates make it a clear winner. Although the non-gigabit LAN port and unchanged gaming performance are minor drawbacks, the overall package remains outstanding.
Ultimately, if you want the best Android TV box experience in 2026, the Ugoos SK4 Pro is the one to get. Check the links above ☝️ to grab yours today.