X1S Vocal Pack. The X1S is a refined version of sE's best-selling X1, tuned for advanced performance. With the highest dynamic range and SPL handling capabilities in its class, along with expanded features that dramatically increase its flexibility, the X1 S has been improved in every way relative to the original, even in terms of its affordability.. Just like its predecessor, the X1 S utilizes a hand-made condenser capsule, meticulously constructed and tuned in sE’s capsule room by technicians with decades of experience. This results in a capsule built like the world’s finest musical instruments, and a capsule truly up to the challenge of recording them. Where the original X1 was powerful, the redesigned electronics of the X1 S take its performance to a whole new level, giving it the highest dynamic range in its class. Its internal redesign also allows for improved sensitivity, dramatically increased SPL handling (up to 160dB!), and a huge reduction in self-noise. Attenuation The -10 dB and -20 dB pad switches provide extended dynamic range, enabling a wide range of applications and close-mic techniques for even the loudest instruments...think super-heavy electric guitars, fortissimo brass instruments, and heavy-footed kick drums. Low-cut Filters Selectable at either 80Hz or 160Hz, these two filters help eliminate low-frequency rumble or footfall noise, as well as help compensate for excessive bass (proximity effect) with close-mic techniques. Chassis Unlike the cheaply constructed bodies of some entry-level microphones, the X1 S's all-metal chassis provides efficient rejection of any electrical interference and noise. The high-quality finish ensures a great look for years to come. A gold-plated XLR connector ensures loss-free, reliable signal connection.