JBL Quantum 300 over-ear gaming headset. The JBL Quantum range delivers a sound experience that transforms each headset into a crown for the everyday champion. The JBL Quantum 300 gaming headset comes with the JBL Quantum Engine PC software for immersive surround sound, enabling PC gamers with surround Sound and the ability to adjust EQ, sound effects, and mic modes. Built by our team of acoustic engineers and tested extensively with gamers around the world to develop a predictive algorithm so that every game is more immersive to gives you a competitive edge. The JBL Quantum 300 gaming headset delivers an accurate soundscape so you can amplify all your epic gaming moments. Product details. Hybrid wired over ear gaming headset, JBL Quantum Sound signature, JBL Quantum Surround Sound, JBL Quantum Engine PC software, 3.5 mm and USB audio adapter connections, Flip-up boom microphone. For over 70 years, JBL has engineered the most precise, impressive sound found in big venues around the world. JBL's mission and vision is to make life more connected, entertaining, personalized and productive. The company combines passion and purpose to design smart products, systems, software and services to connect people wherever they are. Select your preferred surround sound settings and personalize your JBL headset for a user-friendly dashboard.