Elgato Wave:1

Wave: 1 gives you access to a microphone and a quality mixing solution, and combines the simplicity of plug-and-play with circuits worthy of a pro studio. Its proprietary technology eliminates distortion. Plug in a headset and enjoy a latency-free monitoring. Turn the button to adjust the monitoring volume, tap it to mute the sound of the microphone, and check the status of the Mute button at a glance. With the Wave Link app, you can combine all your audio sources and create two independent mixes (for you and the audience). With Wave: 1, your streams and podcasts benefit from a professional sound rendering, and you control the sound in every detail.