Excellent processed Matrix Switch / Splitter with many additional features such as MHL, ARC and separate Audio Out.

The unit is 20.5 cm wide, 7.5 cm deep and 2.5 cm high and weighs 375 grams.
It comes with still a power plug, a microUSB MHL cable, a remote control and a manual.
This is unfortunately available only in English and an Asian language, can at Leicke but also loaded down in German.
I recommend considering the extensive features also urgent.

In the black anodized aluminum case brings Leicke on the back of four HDMI ports to (Port A with MHL function), two HDMI Out (Out A with SPDIF, Toslink and 3.5mm jack output) and the power connector under.
On the front are a veritable sea of ​​lights Status LED's for power on / off, A1-4, IR, B4-1, ARC, SPDIF, 2CH, 5.1CH, ADV and the switch On / Off, Port A, Port B, ARC On / Off to find SPDIF / headphone out and the audio option.

The remote has buttons for Power, A1-4, B1-4, 2CH, 5.1CH, ADV, ARC and the SPDIF / headphone choice.

The purpose of this switch is huge.
It can distribute up to 4 HMDI inputs in parallel or asynchronously to the two outputs.
This worked out great for me on two PC monitors.
The image of the graphics card via HDMI2 input was displayed perfectly by the entsprechenen input selection on both 1080p monitors.
Depending on the choice of course only one of the monitors.

The additional connection of a Grade 3 with the supplied MHL cable through HDMI1 / MHL did not work.
Apparently, the cable is either not appropriate for the grade 3 (according to the instructions for the S2), or it is defective.
With an older MHL 1.0 cable with a separate power supply via USB (from a grab bag with me) I was able to picture the note 3 to spend the same time as desired on one of the two monitors or on both.
I'm in contact with Leicke to clarify that the cable is really intended only for the S2 (which I can not think).
My grade 3 Loading definitely to the cable, so it's not quite dead.

The source changes on the monitors proceeded with a minimum delay, which I have not yet bothersome.

In the sound selection of this switch provides (the actually also a splinter is because he can two HDMI outs trigger) the relatively rare opportunity to extract the audio signal from the HDMI signal and output via toslink or analog via a 3.5mm jack cable. I have tried this with a headset and it worked perfectly.
A great additional feature!

Leaked 3D material and some UHD test videos were easily transferred from the PC.
The UHD samples were naturally scaled down to the 1080p screens on FullHD.
Natives UHD material on a real UHD-setter I could not test the absence of such a device.

The Audio Return Channel functionality ARC I have tested on my Samsung UE55H6470.
The TV audio signal from the satellite receiver's internal Samsung was easily played back to an Onkyo TX-NR515.

And I've also tried the CEC control.
A connected Sony BluRay player could be controlled via the remote control Samsung TV.
The signal is so controlled as desired by passed through the Canaan.

What I could not test with my equipment is repeater function of the device, since I do not use such a long HDMI cable.
The option, however, is integrated and precisely at Beamer installations very useful, because these often are quite a few meters from the other equipment away.

If I can anything appreciable to criticism about, then that responds only to the non-functioning MHL cable and the somewhat awkward input selection directly on the device with a small time delay to the keypresses.

Otherwise, the Kannan is an almost perfect Matrix Switch / Splitter.
For people with too few HDMI ports on your TV or AV Receiver, it can be an ideal solution.

From me, therefore like the full 5 stars for this great device.

I hope this review could assist you in your buying decision ...