Schoeps Colette Series Stereo Set, Includes 2x CMC6 Amplifiers, 2x MK4 Cardioid Capsules, 2x SG20 Microphone Mounts, 2x Windscreens Schoeps Colette Series Stereo - 2x CMC6 Amplifiers - 2x MK4 Cardioid Capsules - 2x SG20 Microphone Mounts - 2x Acoustically treated Windscreens - Wooden Storage Case - Schoeps 1 Year Warranty MK4 Microphone Capsule: Frequency range: 40 Hz - 20 kHz Sensitivity: 13 mV/Pa Equivalent noise level (A-weighted): 15 dB-A Equivalent noise level (CCIR): 24 dB Signal-to-noise ratio (A-weighted): 79 dB-A Maximum sound pressure level at 0.5% THD: 132 dB-SPL Size (Length x Diameter): 0.8 x 0.8" (20 x 20mm) Weight: 0.6 oz (17g) CMC6 Amplifier: Powering Voltage: 12 / 48 V Current Consumption with 12 V: 8 mA Current Consumption with 48 V: 4 mA Impedance (at 12 V): 25 Ohms Impedance (at 48 V): 35 Ohms Low-cut Frequency: 20Hz Maximum output Voltage: 1V Minimum Recommended Load Impedance: 600 Ohms Dimensions (L x Dia.): 116 x 20mm (4.56 x 0.78") Weight: 60g (2.11oz)