Variable Pattern Externally Biased Condenser Microphone The CAD M179 combines a vintage capsule design with advanced electronics. The M179 features the dual pattern version of the original equitek e-300 capsule, an externally biased capsule with a gold sputtered 1.1" diaphragm. Similar to the M177 except with an adjustable Polar Pattern, the M179 features a dual sided, externally biased capsule with a gold sputtered 1.1" diaphragm. The M179 has a high speed, low noise operational amplifier head amp, coupled with a new discrete high efficiency power supply circuit. This results in incredibly low noise, low distortion and fast transient response. The M179 will even work with 24-volt phantom supplies! The M179 also features a non-capacitive 20 dB pad switch and an 80 Hz high-pass filter.Features: Continuously variable pattern with a "hard" cardioid center detent. Large 1.1" dual diaphragm external bias condenser capsule. Gold sputtered diaphragms. High SPL capability (143 dB SPL with pad) Transformerless balanced output circuits. 20 dB non-capacitive pad 6dB/Octave @ 100Hz high-pass filter Stainless steel internal pop/EMI filter. Specifications: Type: Side address, external bias condenser Frequency Response: 10-20 kHz Polar Pattern: Variable Impedance: 200 ohms Sensitivity: -36 dBV (16mV) @ 1Pa Equivalent Noise Level: 11 dB-A Maximum SPL: 143 dB SPL (with pad) Total Harmonic Distortion: Less than 0.15% Switches: High-pass filter, 20dB pad High-Pass Filter: 100Hz, 6dB/octave Powering: Minimum requirements are 24-52V phantom power capable of delivering at least 8 mA. Connector: Three pin male XLR type. Finish: Durable charcoal gray urethane. Satin nickle plated front & rear screen. Dimensions: 2.25" (57.2 mm) Dia., x 7.00" (177.8 mm) High Net Weight: 17.8 oz. (506 grams) Furnished Accessories: MZM-5 elastic suspension shockmount