I haven't been able to find anything about this type of issue. Anything below about 24% is completely inaudible. 40% and up is unbearably loud.
I have the output device set as my headphones, Corsair Vengeance 1500 Analog Stereo.
Nevermind I fixed it, I fiddled with PulseAudio Volume Control's settings, accidentally set my headphones as input, and when I set it back to Analog Stereo Output it worked. Nice!