The ASTRO A40 TR Headset and MixAmp M80 bundle is designed to provide Xbox One gamers with total control over their gaming audio experience. The ASTRO A40 TR is a premier gaming headset for professional gamers, including esports athletes, content creators, streamers, and game developers. It was developed with esports athletes to meet their rigorous standards for audio fidelity, comfort and durability. Able to adapt to any environment, the A40 TR arrives as an open-back headset featuring a swappable precision mic and customizable speaker tags. For loud environments such as pro tournaments, you can transform the A40 TR to a closed-back noise-isolating headset by adding a Mod Kit (sold separately) which features sealed speaker tags, synthetic leather ear cushions, and a voice-isolating microphone. For VR gamers, the A40 TR will fit perfectly over the HTC Vive, Oculus, or PS VR and deliver an immersive audio experience. The included MixAmp M80 adapter mounts directly onto your Xbox One Controller. The MixAmp M80 puts all critical audio controls at your fingertips for quick adjustment of game-to-voice balance settings, determining how much game sound and voice chat you wants to hear. It also allows you to select any of three different EQ modes optimized for different game genres, as well as providing master volume control and the ability to mute the microphone easily. The MixAmp M80 is wireless to the Xbox One for added convenience. A40 TR Headset Specification frequency response 20 - 20,000 Hz. Transducer principle dynamic, open 40mm sound driver tuned for gaming, distortion THD less than 0.1 percentage, microphone 6.0mm unidirectional with noise gate, nominal impedance 48 ohms, headband pressure 2.6 N, ear coupling over-ear.