Serial numbers: 20796

4 switchable patterns, 10 and 20 switchable pads, and 75/150hz switchable low cut filters. Includes original case, stand clip, windscreen and response graph. Checked and working, very clean, Used in a studio environment.Windscreen is in fairly solid shape. Windscreen blue dye transferred to case foam, as seen in the photos.Photos are of the actual microphone that will ship.

Shipping options: FedEx, UPS, USPS Priority mail. Required insurance and signature confirmation are factored in the shipping cost.With Google search (AKG C414EB P48) you can see the original owners manual and service manual, in PDF format. Both are on the first search page.

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Information from AKG engineering data sheet (21-782-10MI): C 414EB-P48 features: Large, one-inch dual-diaphragm system Four different polar patterns selectable on the microphone Pre-attenuation (0, -10, -20 dB) and bass attenuation selectable on the microphone (0/75 Hz/150 Hz) Exceptionally wide dynamic range Low self noise For 48 volt phantom powering only Low current consumption All-metal housing in black chrome finish DESCRIPTION Although based in the lineage of famous AKG large diaphragm microphones-C 12, C 12A, C 12B, C412,C414&C414EB, and also on the same one-inch gold-sputtered dual-diaphragm capsule-the CK-12-the electronics of the new C 414EB-P48 are a completely new departure, and the key to the digital-level performance of the microphone. The resulting technical specifications are unique among today's microphones and will remain in the forefront of even tomorrow's microphones. The equivalent noise level of the C 414EB-P48, is at the "hushed" level of 18 dB SPL (weighted per DIN 45 405) and 15 dB SPL (A-weighted noise level per DIN 45 634, IEC 179), figures heretofore unchallenged. The C 414EB-P48 Microphone's maximum sound pressure capability equally outranges any other product available. For all polar patterns with zero attenuation and flat response (no rolloff), the maximum sound pressure level at 1,000 Hz for 0.5% total harmonic distortion from the electronics ... is a resounding 142 dB. With maximum attenuation selected, the figure increases to 162 dB. This results in a working dynamic range of over 124 dB, and a signal-to-noise ratio re: 94 dB SPL per DIN 45 590 of 76 dB (re: 94 dB SPL per IEC 179/A-weighted of 79 dB). Pre-attenuation is incorporated before the FET impedance-converter stage to permit the increase of undistorted maximum sound pressure level by 10 or 20 dB for close-up recordings. This technique inhibits distortion in the transformers and circuitry used in the microphone's output and mixer inputs. A recessed switch on the front enables the user to select anyone of four different polar patterns to adjust for different recording situations. Four different types of microphones are thus combined in only one C 414EB-P48. All polar patterns are virtually frequency independent to guarantee the same sound character for all angles of incidence. The switchable bass-cut circuitry will reduce the risk of distortion at low frequencies. This feature is especially useful to combat wind noise and stage floor vibrations. The slope of the bass-cut filter is more than 12 dB/octave, the cut-off may be set to 75 Hz, 150 Hz, or may be bypassed (flat). TECHNICAL DATA Transducer type: Pressure gradient transducer with twin-condenser diaphragm and FET- preamplifier. Directional Characteristics: Variable (cardioid/omni/figure-eight/hypercardioid) Directional Reference: Nickel grille = front of mic, black grille = rear of mic Control Facilities: 4-position pattern-selector switch (0/0/8 /0 ) 3-position pre-attenuator switch (0/-10 dB/-20 dB) 3-position bass-rolloff switch (0/75 Hz/150 Hz) Frequency Range (all patterns, 0 rolloff): 20-20,000 Hz Nominal Impedance: 200 ohms Recommended Load Impedance: > 600 ohms Sensitivity at 1 kHz (all patterns, 0 attenuation): Open circuit: 9 rnV/Pa; -61 dBV* Maximum power level: -43.5dBm (re: 1 mW/l0dynes/ 2cm ) EIAGm : -136dBm Tolerance: +2, -2.5 dB SPL for 0.5% TH 0 (all patterns, 0 attenuation, 0 rolloff): at 1,000 Hz: 142 dB SPL Typical Self-Noise (all patterns, 0 attenuation, 0 rolloff): 18 dB SPL (with filter CCITT-C/D IN 45405) 15 dB SPL (with filter A per IEC 179/DIN 45634) Power Requirement: 48 volt phantom powering (0 IN 45596) Current Consumption: ~ 1 mA Temperature Range: -10°C (~ +14°F) to +60°C (~ +140°F) Maximum Relative Humidity: 90% at +20°C (~ +68°F), 85% at +60°C (~ +140°F) Case Material: Black-chrome plated, steel-wire mesh Connector: 3 pin X LR -type Dimensions: 141 x 45 x 35 mm (5.6 x 1.8 x 1.4 inch) Net Weight: 300 g (~ 10 oz.) Included Accessories: SA-18/3 clamp-type stand adapter with 5/8-in. -27 thread W-26 foam windscreen Foam-lined vinyl case Optional Accessories: N-62E ac pwr supply for 2 mics to bal/unbal inputs N-66E ac pwr supply for 6 mics to bal inputs only A-52 adptr for pwring 1 mic from bal input H-17A combination shock mount/windscreen KM-series floor and boom stands, stand accessories ST-series table stands MCH-series heavy-duty microphone-cable assemblies