I forgive five stars - but would probably assign one, because I had to return the splitter. However: the HDMI splitter was not "guilty". For my purpose the splitter did not work (more on that later), but I already tested different brands and this was the best so far, what processing, size and 'skill' concerns.
Housing made of metal, in pocket-size format; you can route an HDMI source to two HDMI outputs. This works - but not with the AV receiver from Pioneer (VSX 924 model K) !!!