Sennheiser, Dynamic Vocal Mic With Switch The Sennheiser XS 1 has been designed for first-time and casual users who appreciate simplicity, upfront vocal presence in the mix, and no complicationsThis versatile new microphone provides professional live sound for those getting started, thanks to its great feedback rejection and silent mute switch for flexibility and control. XS 1 comes in an all-metal housing and therefore is a reliable companion on any stage. As a singer, presenter, or entertainer, you can count on the renowned Sennheiser live sound. All you need to do is: Raise your voice.