At the very beginning I would like to say that I lack 4K output devices can only make statements to 2K.
The structure of the HDMI splitter is done entirely in metal housing and high quality. The design is practical, nothing more. Connections to the splitter provides an MHL / HDMI (incl. Power supply of a connected device) and 3 normal HDMI inputs. At outputs 2 HDMI sockets (channel A and B) are present, one via an optical connector (Toslink) and has a headphone jack for audio output. The sound output can thus be extracted from the HDMI cable to these connections. I think that's ever practical.
The front has a sea of LED indicators on in red, green and blue. Ultimately therefore appears with the selected function of each active input and output. This can be confusing at the high number of connections with the resulting color match perfectly. In addition to an on / off switch separate button for the HDMI output channels A and B, ARC (Audio Return Channel via HDMI for arming the separate audio output), optical audio output (SPDIF / headset) and an audio button are present.
The remote control I would run times with standard or usual call and is completely in plastic. With it the channel assignments A and B are armed. In addition, the audio capabilities are set to output channel A (on / off, stereo, 5.1, ADV, ARC and SPDIF / headphones). All Splitter functions can therefore easily be carried from the sofa.
Operating
The primary area of application of an extension no longer sufficient HDMI inputs is provided in televisions with me. Android TV, Blu-Ray player, HD projector, PC, satellite box. The existing connections are there without Umsteckorgien no longer sufficient.
When connecting cables consistently higher quality HDMI High Speed with Ethernet cable used.
It is particularly important if the image quality suffers through use of the splitter. In addition I have first used the splitter at the PC and at full resolution with all details adjustable in 1080p (AMD R9 280X graphics card) alternately with and without splinters Tomb Raider in 2013 as a reference angespielt.Bezüglich the picture quality I could absolutely not tell the difference. In addition, using the output channel A, the audio signal is coupled out and looped through to a connected headset. As I have already regretted only a 280X graphics card to have. Are their audio properties via HDMI but very limited. The test was able to convince a whole anyway.
When switching between the audio input channel features or the splinter in PC mode with multiple monitors is noticeable that every time (at least the AMD graphics card) apparently initializes the connected display devices again. Until the restoration of the display, it can take a little. The point, I think but bearable and mention it for completeness. In operation on TV the phenomenon does not occur. The switching rates between the HDMI channels are normal. The resulting waiting periods of 2 to 4 seconds are apparently due to the HDMI HDCP copy protection balance.
The use of the TV running perfectly. All devices can be easily switched via the splitter. The last test was on TV at the use in the field of 3D. In addition I have the BD selected as the reference The Ice Queen from Disney. Even when playing 3D there is nothing to complain about.
Also worth mentioning is the integrated CEC support. All devices with CEC tune in the channels when switching on and off from one another. On my Sony BD player in conjunction with the Samsung TV (my single CEC devices) which is also completely the use of Canaan Splitters in function.
Summary:
Although no design Renner, but in all other respects a compelling product. All set by my goals were achieved. Therefore, a recommendation from me.