While we're at it, all surround sound systems. Sound effects being in 16.2 Dolby Atmos THX Fuckslayer Iridium are totally unnecessary other than to waste space.
The holy grail of audio was reached in the 1950s when stereo became feasible. The improvement over mono was yuge. In the 1970s there was the first surround sound in the form of quadraphonic. It failed, because music recorded in quadraphonic didn't sound appreciably better than stereo and required a weird decoder box to extract two extra channels from a stereo vinyl record or tape.
Most films, music, and games are in stereo and for 90% of people stereo, esp. with headphones, will be spot on. I mean, you don't have 16 ears, yet you can determine pretty accurately which direction a sound is coming from in all three dimensions with just two (the only exception being when it's absolutely behind you, when it could be coming from absolutely ahead. Even elevation can be determined in stereo because in reality your ears aren't going to be exactly level.
All you need for a proper sound experience in gaming is a quality pair of headphones (I recommend the AKY Y50 that I've just obtained) or some proper two-way speakers (i.e. separate woofers and tweeters). It is not more "immersive" to have 16 speakers all around your room. It is diminishing returns, but because you're a good little consoomer they saw you coming. It also sounds weird if you aren't in the exact centre spot of all this.
I bet you can get RGB 16.2 surround setups as well, can't you.