The JBL Quantum 100’s control scheme is inadequate but intuitive. Like many gaming headphones, it’s limited to a few basic functions, with the only onboard controls being a volume scroll wheel and a mic mute button. Thankfully, both offer plenty of physical feedback, as the volume scroll wheel stops at the minimum and maximum increments while the mic mute button is very clicky, so it’s easy to tell when you’ve made an input.