Large-Diaphragm Multipattern Condenser Microphone

  • Austrian Audio OC818-STUDIOSET – Large-Diaphragm Multipattern Condenser Microphone, Silver
  • Austrian Audio OC818-BLACKSTUDIOSET – Large-Diaphragm Multipattern Condenser Microphone, Black

The new viennese original

Engineered and manufactured in Austria, The OC818 is Austrian Audio’s premier, professional, large diaphragm microphone. Its high sensitivity, low self-noise and ability to handle everything from a whisper to extreme SPLs make it the most advanced microphone for studio, broadcast and live applications. As the unique ceramic capsule design is so consistent, any OC818 is match-paired with any other OC818, and when in cardioid mode, it can also be match-paired with any OC18, its affordable, smaller sibling.

    The heart of the OC818 – CKR12 Ceramic Capsule

    Making Passion Heard

    We bring passion to everything we do, and nobody brings more than our engineering team. Every CKR12 ceramic capsule is handmade in-house at our facility in Vienna and now we are developing the next generation of transducer and microphone builders to serve our expanding customer-base.

    Key Features


    • Handmade CKR12 ceramic capsule: Made to the same critical dimensions as the classic CK12 capsules
    • Multiple polar patterns Cardioid, omnidirectional & custom programmable
    • Microprocessor control of polarisation voltages| Allows remote controlled polar pattern settings
    • Two different analogue high-pass filters with three settings 40 Hz, 80 Hz, 160 Hz
    • Two different types of analogue pads -10 dB, -20 dB
    • Dual outputs for recording each diaphragm separately






    Technical specifications

    • Directional characteristics: Multi
    • Impedance: 275 Ω (symmetrical)
    • Polar pattern: cardioid, omnidirectional, figure-8, hypercardioid & custom programmable
    • Load impedance: > 1 kΩ
    • Frequency range: 20 Hz – 20 kHz
    • Supply voltage: 48 V (< 4mA, typical 2.1mA)
    • Sensitivity (all directions): 13mV/Pa
    • Main Connector: XLR 3 pin
    • Equivalent noise level: 9 dB SPL (A) or remote: Mini XLR 5 pin Connector for back membrane
    • Max SPL: 148 dB SPL (158 dB SPL)
    • Dimensions: 157 x 63 x 35 mm
    • Switchable pad: -10 dB, -20 dB
    • Weight: 360g
    • Analog Low Cut filter: 40 Hz (2nd order), 80 Hz (2nd order), 160 Hz (1st order down to 80Hz, 2nd order below)