TheX6 Pro player has its own GUI called ZIUI and it's based on the Android Lollipop 5.1.1. Everything you need is here, easily accessible through large windows and a good overall hierarchy of he player's features, apps and functions. If this is not enough for you, you can even add your own familial GUI.

Through the Explorer app, you can quickly access local or network files. The player has no Root functionality but this can be added later, although have in mind that you would lose the F.O.T.A. function.

The player reached our labs with 1.0.34 firmware installed , which was soon updated to the latest 1.0.36 using the USB OTA function.

Through the options menu you can set the player's properties. We chose to just set the Audio to HDMI in order to get the Audio passthrough functionality. The Zidoo X6 has a built in frame rate detection so it will automatically switch to the correct output signal to suit the source video. You cannot set this manually and it's automatically triggered by the video material. Note that this also stands for the KODI software, which also requires no user interference. The player of course comes with a renamed version of KODI called ZDMC, which is based at the KODI 16.0 build and works very well, as you will see later on our test section::

This is how the Zidoo X6 is seen by CPU-Z utility:

We are ready to start the audio/video tests. Here is out system setup:

• TV: Panasonic 50S20 (1080p)
• A/V Receiver: Yamaha RX-V775 (7.2 capable) with the latest firmware installed
• Wifi Router: TP-Link VR200 (802a,b,g,n) with the latest firmware installed
• Test files

HD Audio Tests (Audio Output set to HDMI Passthrough)

The default video player supports 7.1-channel sound, with an exception for the the DTS-HD HRA 7.1 files, which were downsampled to 5.1. The ZDMC fully supports up to 7.1 passthrough playback

Video Bitrate Tests

We used H.264 and H.265/HEVC encoded .mkv video clips (up to 400Mbps bitrate) in order to test the local/network streaming and playback performance of the player.

The Zidoo X6 Pro limits the playback of video files to 100Mbps. Using stock video player, if you try to playback any higher encoded files, you will get the "Capacity Set Limit" error message.

The ZDMC will just playback only the sound part of each file and no video will be displayed.

The 1Gbit LAN connection of the player allows it to playback up to 100MBps video files. Using the Wifi 802.11ac connection will result to a good performance, and the Wifi 802.11n will also give acceptable results.

4K Tests x264 (AVC)

The first real playback tests showed that the Zidoo X6 perfectly supports 4K H264 files, provided that are encoded not higher than 100Mbps. As you see in the table above,the player returned the "Capacity Set Limit" error message in two cases.

The majority of you won't have this problem with your video files, but most demanding users may find that message disturbing. A pleasant surprise was the performance of the stock player, which managed to output DTS-HD MSTR sound to our Yamaha A/V Receiver, and it also perfectly displayed external Greek SRT subtitles.

4K Tests x265 (HEVC)

The Zidoo X6 v1.0.36 didn't have problems during the playback of H265 (HEVC) videos, as long as they were 8bit encoded. The stock player kept crashing with 10bit encoded files, while the ZDMC (Kodi 16.0) could only playback sound. We found this behavior rather strange and probably this is the biggest flaw of the player since most H265 files video file are 10bit encoded.