The Neumann KM-183-MT-STEREOSET is perfect for musicians, sound engineers, and content creators. It has a frequency-independent omnidirectional polar pattern, delivering natural and transparent sound with low self-noise. The set includes 2x KM 183 microphones, 2x SG 21 BK accessories, 2x WNS 100 items, and comes in a black box. It's great for live sound reinforcement and broadcast. The microphones are small diaphragm, pressure-condenser types with a KM 100-based output stage and transformerless circuitry. They produce uncolored, high-gain output signals. Each microphone has an element type of condenser, an omnidirectional polar pattern, a frequency range of 20 Hz to 20 kHz, a maximum SPL of 140 dB SPL, an impedance of 50 Ohms, a load impedance of 1000 Ohms, sensitivity of 12 mV/Pa at 1 kHz into 1 Kilohms, signal-to-noise ratios of 70 dB CCIR and 81 dB A-Weighted, equivalent noise levels of 24 dB CCIR and 13 dB A-Weighted, and THD of 0.5%. They have an analog output of 1x XLR 3-Pin and operate on 48 V phantom power. The microphones are 0.87 inches in diameter and 4.21 inches long (22 x 107 mm) and weigh 2.82 oz (80 g). Included are a twist pack case and a WS 81 windscreen.