Play like a Pro! The ASTRO A40 TR Headset is the premier gaming headset for professional gamers, including esports athletes', content creators and live steamers. It was developed with esports athletes' to meet their rigorous standards for audio fidelity, comfort, and durability. Mod Kit Ready, the A40 TR adapts to any gaming environment. The A40 TR arrives as an open-back headset featuring a swappable precision mic and customizable Speaker Tags. For loud tournament environments, one can transform the A40 TR into a closed-back noise-isolating headset by adding a Mod Kit (sold separately) with sealed Speaker Tags, synthetic leather ear cushions, and a voice-isolating microphone..