This is the one I got:
https://www.amazon.com/Kinivo-501BN-5-P ... B0049SCB2YIs pretty reliable since I've been using it for years now, everything passes through it including my Blu-Ray Player which handles my sound system (through the out port) Desktop PC, and all consoles (currently only PS4 Pro and Switch, previously Wii U, PS3 and 360).
I had only one weird issue with it so far, with the Wii U, and only in the Wii U dashboard and Shovel Knight for some reason (no other game).
Is hard to describe, but there was this weird graphical effect as if the edges of certain lines on screen were 'crying' or 'bleeding' and no it wasn't screen tearing. It was subtle (so easy to ignore), and as I said not present during actual game, except for Shovel Knight, no idea why that game specifically, but is the only 2D game I got for the system.
I confirmed that it was caused by the splitter as I connected the Wii U with Shovel Knight with the same cable, directly to the TV and the effect disappeared.