The DPA 3506 Omnidirectional Stereo Standard A-b Kit - Inc 4006. Superb matched pair of 4006-TL omnis with all the accessories. The DPA 3506 is a complete 4006-TL Stereo Kit with two carefully factory-matched phantom powered (P48) condenser microphones. The DPA 3506 also includes a Stereo Boom and the complete range of DPA Acoustic Modification Accessories, all in a sturdy carrying case with a foam insert. The specially selected DPA 4006-TL microphones are matched within +/- 0.5 dB on both frequency range, sensitivity and self noise. The maximum phase response difference from 50 Hz to 20 kHz is 10 degrees. The high sensitivity, the low noise-floor and the extremely linear frequency response from 15 Hz to 20 kHz (+/-2 dB) of the microphone pair makes the DPA 3506 the perfect choice for all professional A-B Stereo recordings. The main features of the DPA 3506 include: Transformerless Output Stage - The transmformerless output stage further minimizes noise and provides enhanced detail and signal clarity High SPL Handling - The DPA 4006 features an SPL rating of 143dB, allowing the microphone to capture high transients without peak distortion Flat Frequency Response - The linear frequency response of 15Hz to 20kHz makes the microphone suitable for use in a wide variety of applications Omni-directional Polar Pattern - The omni-directional pattern provides a generous, even signal response at the direct and off-axis sections of the microphone Versatile - excellent for A-B Stereo recordings (pair), voice capturing, ambient/environmental and instrument recording Principle of operation: Pressure Cartridge type: Pre-polarised condenser Power supply: 48 V Phantom power Frequency range, ± 2 dB: 15 Hz - 20 kHz Directional characteristics: Omnidirectional Equivalent noise level A-weighted: Typ. 15 dB(A) re. 20 µPa (max. 17 dB(A)) Sensitivity, nominal, ±2 dB: 35 mV/Pa; -29 dB re. 1 V/Pa Equiv. noise level ITU-R BS.468-4: Typ. 27 dB (max. 29 dB) Capsule diameter: 16 mm (0.63 in) Total harmonic distortion (THD): <0.5% up to 129 dB SPL peak, <1% up to 135 dB SPL peak Preamplifier frequency range: 20 Hz to 40 kHz ±1 dB Output impedance: <200 Ohm Cable drive capability: Up to 100 m (328 ft) Microphone length: 165 mm (6.5 in) Max. SPL, peak before clipping: 143 dB Weight (single 4006-TL): 150 g (5.29 oz) Dynamic Range: Typ. 120 dB S/N ratio, re. 1 kHz at 1 Pa (94 dB SPL): 79 dB Connector: 3-pin XLR-M (Standard P48) Includes the Accessories: 2 x DD0254 Close-miking Grid, Trapezoid, Silver. 1 x UA0836 Stereo Boom with Holders. 2 x UA0777 Nose Cones. 2 x UA0638 Windscreens for 4003/06. 2 x L50B Acoustic Pressure Equaliser, 50 mm (1.97 in) Ball. 2 x L40B Acoustic Pressure Equaliser, 40 mm (1.57 in) Ball. 2 x L30B Acoustic Pressure Equaliser, 30 mm (1.18 in) Ball. 2 x DD0297 Diffuse-field Grid, Black. 2 x DD0251 Free-field Grid, Silver. 2 x 4006-TL Omnidirectional Microphones, P48