Mecool KM9 TV Box Review


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Today I have the review of yet another Amlogic S905X2 TV box the Mecool KM9. In this review I you will see how much improvement in performance the new S905X2 CPU and the Mali G31 GPU over previous S905X and RK3328 Boxes. However, it is still early in the game and I am yet to see a maxed out model running on this new hardware.

Mecool KM9 and remote

KM9 Hardware

The Mecool KM9 runs on the new Amlogic S905X2 CPU and it is clocked at 1.8GHz. The GPU is the new ARM Mali G31 running up to 650Mhz. It comes with 4GB of DDR4  RAM, and 32GB of internal storage. It has Dual band AC 2.4GHz+5.8GHz WiFi and Bluetooth 4.1. It has Ethernrt LAN speed of 1000Mbps, and it comes with an omni directional voice search remote.

Mecool KM9 LED

IO Ports


  • 1 HDMI 2.0
  • 1 RJ45 Lan 1000Mbps
  • 1 AV port/reset
  • 1 DC input

Mecool KM9 BAck

To the side

  • 1 USB 2.0
  • 1 USB 3.0
  • 1 Micro SD Card reader

Mecool KM9 Side

Operating System & UI

The Mecool KM9 runs on Android TV 8.1 operating system. It does not come with root access, and it comes with Google Widevine level 1, and HDCP encryption. This allows Netflix to show in HD quality. The launcher is Android TV launcher and you can customize all the panes and icons on the launcher and arrange then any order.

Mecool KM9 Launcher

Mecool KM9 movie streaming and 4K playback

Android TV is based on delivering the best movie streaming experience. Even though the Mecool KM9 runs on Android TV OS it is not the full version that features Chromecast and certification for Netflix. It doesn’t even  come pre-installed with Netflix, you cannot find it on the Android TV OS playstore you have to side-load it. In fact, most of the apps you would normally use on the Full version of Android, is not available on this version so you will have to sideload APK files to access them. I was able to sideload Netflix and Amazon Prime video and they both played in HD quality.



In most of my videos I would use a set of 4K videos to test the 4K video playback capabilities. The Mecool Km9 played most of my 4K samples which are all HEVC 60fps formats. It appears that the MKV format gives this box some rendering issues at 60fps. However lower frame rates like 23.9fps and 25fps in MKV format will play well. Also these 4K videos were played using a USB 3.0 flash-drive, on the USB 3.0 port on the the box for high data read speed.


3D gaming and Bluetooth Controllers

The gaming experience on the Mecool KM9 was way better than I expected. The new Mali G31 GPU is really out performing the previous Mali 450 and the even the T860. Issues with rendering and audio quality that I would normally get on theses GPUs, is non existent on the Mali G31. Paring gamepad controllers, mini touchpad keyboards, and air-mouse was easy.  


KM9 Benchmark Scores

  • Antutu – 57868
  • Geekbench – 696 Single-core/2067 Multi-core
  • Ice Storm Extreme – 5235
  • RAM Speed – 3456.53MB/s
  • ROM Speed – 126.57MB/s read/77.94MB/s write
  • WiFi Speed – Max only on 5.8GHz band

Final Thoughts

The Mecool KM9 I think did pretty OK in this review I believe that the the switch to this new hardware is doing really well for benchmark scores and 3D performance. I believe that the firmware still needs some adjustment to handle 4K MKV videos better than what we are seeing right now. I really like how fast and smooth the interface is on this box, a the included voice remote works really well. Something I did not mention in the video is that the front LED power light changes and responds to different things on the box like when you connect to WIFi it changes, if you plugin a flash drive it changes, and when idle it rovers like the light found on the Knight Rider car (Kit) which looks really cool I might add.



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