The JBL Quantum 400 are an okay pair of wired gaming headphones. They're similar in design and performance to the JBL Quantum 800 Wireless, but don't have the latter's wireless connectivity or active noise cancellation feature. They offer a wealth of customization options, with a dedicated companion app providing access to a Graphic EQ, microphone volume control, and RGB lighting customization. These headphones have a somewhat bass-heavy sound profile that should be pleasing if you like an extra bit of thump and kick in your favorite action games. Their microphone performs quite well overall, making your voice sound clear even in hectic environments. They also come with a 1/8" TRRS and USB-A to USB-C cable, ensuring full compatibility with all gaming systems. On the downside, they have a bulky design that's not especially portable and lack basic call and music controls.