Switchable capsule caps provide cardioid and hypercardioid polar pattern, plus an optional gain boost, while the addition of a switchable pad and highpass filter let you tailor the frequency response to a wide range of applications. You can power the C1000 S MK4 with a pair of AA batteries for up to 120 hours, making it a great companion for your mobile recording. What's more, the internally shockmounted capsule has been redesigned with gold-plating to resist rust and corrosion.