No, not the PC. The audio. The peripherals. What kind of Amp / Dac are you running. And what if anything have you done with your keyboard, since pistol apparently likes to "hulk smash" her keyboard when she types / games (MX greens).
I ask this because for years I've been swapping keyboards, mice, headsets, speakers, microphones, and mouspads. I've never bought the same thing twice when items wear out and it's disheartening to find something you actually like only to find out a company stops making it. *cough* Logitech *cough*
P.S. If this has been answered before my excuse is I can't be bothered to dredge the forum on my blazing fast 128K connection.
Once you get into the professional audio thing you will start to buy the same stuff over and over again. Many popular parts been there for years. Technics Turntables been there for over 30 years, so each vinyl DJ has used pretty much the same turntable - and they are still a club standart. The legendary Shure SM58 dynamic mic - most singers have used them. Same with Sennheiser HD-25 headphones... The popular DJ & studio headphones. Same with Beyerdynamic (Logan use them in some videos, they are also modded with the Modmic).
When you get some of the professional parts, you may keep them for a long time. I got my Beyerdynamic headphones from my dad, they are like 25 years old. Yeah i send them to Beyerdynamic and paid like 150$ to refresh them - but now they look like new and still sound amazing. Audio is not like your smartphone, its not outdated after 2-3 years :-)
Not sure about the mouse but I think he uses a Corsair Vengance K70 with mx browns or blues. I remember him talking about how he liked browns and blues, and he has a K70 setting at his station in all the videos.