Sennheiser MK4 Digital USB Large-diaphragm Condenser Microphone Features Large-diaphragm capsule (1") True condenser design 24-carat gold -plated diaphragm Full metal housing Capsule shock-mounted internally to minimise structure-borne noise Designed for project studios and stage use Low inherent self-noise and high maximum SPL Made in Germany Brand new Never been used (Open for Tested)