This special stereo set gives you two acclaimed TLM170R microphones and two EA 170 elastic suspension mounts in a sleek aluminum case.The TLM 170 R is a large diaphragm condenser featuring five selectable directional characteristics, a 10 dB attenuation switch for extremely high sound pressure levels, a high-pass filter to suppress structure borne noise and an impressive dynamic range to give you unsurpassed versatile performance in a variety of applications.Boasting transformerless circuitry for a balanced audio signal, its transparent, uncolored sound reproduction and excellent sound pressure handling capability make it especially effective for recording wind instruments. But no matter what you choose to record, you’ll hear the difference thanks to the smooth frequency response of all of its polar patterns. Two Local and remote controlled large diaphragm microphones Pressure-gradient transducer with double membrane capsule Five directional characteristics: omni, wide angle cardioid, cardioid, hypercardioid, figure-8 Patented circuitry for remote (with optional N 248 power source) and local switching of directional characteristics Switchable low frequency roll-off and 10 dB preattenuation Tiltable, elastically suspended bracket mounts Nickel finish Acoustical operating principle: Pressure gradient transducer Directional pattern: Omnidirectional, wide angle cardioid, cardioid, hypercardioid, figure-8 Frequency range: 20 Hz – 20 kHz Sensitivity at 1 kHz into 1 kohm: 8 mV/Pa Rated impedance: 50 ohms Rated load impedance: 1000 ohms Equivalent SPL CCIR 468-3: 26 dB Equivalent SPL DIN/IEC 651: 14 dB-A S/N ratio CCIR 468-3: 68 dB S/N ratio DIN/IEC 651: 80 dB Maximum SPL for THD 0.5%: 144 dB Maximum SPL for THD 0.5% with preattenuation: 154 dB Maximum output voltage: 10 dBu Dynamic range of the microphone amplifier DIN/IEC 651: 130 dB Supply voltage: 48 V 4 V Current consumption: 3 mA Matching connector: XLR 3F Weight (Each): 22 oz (625 g) Length (Each): 6 (152 mm)