Main features:

• Cardioid Microphone the series AKG C 391B Blue Line
• Tomb filter and switchable pre-attenuation of the audio level of -10 dB
• High safety against radio frequency interference
• Flexible use of the capsules, mounted directly to the sE 300 B feeding unit, or connected to the 3 mt cable extension.

Technical specifications

• Directional characteristics: Cardioide
• Frequency range: 20-20.000 Hz
• Sensitivity: 10 mV/Pa; (-40 dBV)
• Maximum sound pressure (THD = 1%): 132/142 dB
• Equal noise level (CCIR 468-3): 28 dB
• Equal noise level: 17 dB-A
• Signal/noise ratio (Ponder A): 77 dB
• Decreasing audio level: -10 dB, Switchable
• Tomb filter: 12 dB/eighth to 75 Hz
• Electrical impedance: ≤ 200 ohm
• Recommended load impedance: ≥ 1000 ohmios
• Food: 9-52 Food with V Phantom According the
• Standard DIN 45596
• Current consumption: approx. ≤2 mA
• Connector: 3 pin XLR connector
• Color: Dark Grey
• Dimensions: Ø 19 x 146 mm
• Net weight/gross: 115 g/420 g
• Accessories included: SA 60, W 90
• Optional accessories: A 91, B 15, B 18, H

About us AKG
Talk about AKG it's talking about the history the instrument microphone. This brand has some of the most iconic microphones the history but today is still in continuous technological advance.
AKG also has an impressive catalog of headphones of all kinds.