I am very surprised about the high build quality. No plastic or other things to make it seem cheap. Sturdy, metallic housing and well... nothing to complain about.
The only thing to complain about (well... this is a passive unit, so I guess you will have to accept this) is that the input volume level is EXTREMELY low!
Even if I use this splitter in front of e.g. a UAD interface with input preamps, the volume is SO LOW that I will have to crank it up to insane levels (which often brings a lot of noise, especially if there is a mic input).