Sennheiser MK 4 Stereoset, set consists of 2x MK4 large diaphragm Studio condenser microphone, extremely low noise, high SPL, Solid metal housing, cardioid, 20 - 20.000 Hz, 140 dB SPL max, 48-V-Phantompower (P48), diameter: 57 mm (max), length: 160 mm, incl. 2x MKS 4 elastic shockmount and case, matched pair