[Powerlord]

Mouse: Steelseries Xai
Keyboard: Seelseries 6Gv2
Headset: One of Sennheiser's G4ME line... paid way more than I should have for them.
Speakers: An old Sony STR-SE391 surround sound set that I inherited from my brother when he died in 2009. Got to be 20 years old by now and still works pretty well.

Edit: Forgot to mention, the reason I got a mechanical keyboard to begin with is that I was getting tired of constantly having to replace keyboards because the (plastic) switches kept breaking.