Large-diaphragm Condenser Microphone with Multiple Polar Patterns


$ 1,249.00 £ 999.00 € 999.00 MAP (Studio Set) RRP (Studio Set) RRP (Studio Set)
Buy local
Suited for

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.

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


The Austrian Audio OC818 is not just another microphone in the market; it’s a testament to the relentless pursuit of sonic excellence.
Austrian Audio have brought to market a top-class mic at a very tempting price.
Sound On Sound Gear Of The Year 2019
Austrian Audio ist es gelungen, die Wiener Tradition nicht nur wiederzubeleben, sondern auch um zukunftsweisende Technologien zu erweitern.
Sound & Recording 09-10 2019
These microphones perform superbly on almost all instruments and voices. Their even-handed nature and freedom from unwanted resonance makes them brilliant all-rounders in most situations
MusicTech OC818/18
Das OC18 hat schon ordentlich vorgelegt, aber was Austrian Audio mit dem OC818 zum Preis von knapp unter 1000,- Euro bietet, ist herausragend.
amazona.de OC818 Review
This is a reference grade studio mic that stands on its sound quality, but also offers features that will soon become indispensable parts of our studio workflow.
Audio Media International OC818 Review
Das Austrian Audio OC818 ist ein durch und durch gelungenes Mikrofon, das klanglich und vom Handling her eine wirklich gute Figur abgibt.
Bonedo OC818 Review
The OC18 and OC818 aren’t just great microphones for the price: they’re great microphones, full stop.
SoundOnSound Magazine 07/2019
This is a mic where there’s no point in highlighting sources- the OC818 loves them all, from delicate strings to rocking guitar cabinets, to drum overheads and piano. It’s also lovely on vocals
Recording Magazine (USA) 10/2019
The OC818 is one of the best-sounding new microphones I’ve had the pleasure of reviewing over the past 15 years
Audio Technology 9/2019

The OC818 Mic System

Revolutionising your Workflow

OCR8 Bluetooth Dongle

Remote Control Module (optional)

OCR8 Bluetooth Dongle
  • Optional remote control of OC818 via smart device
  • Bluetooth connectivity via phantom power
  • PolarPilot-App available for iOS or Android
  • Control polar patterns, pads and high pass-filters

PolarPilot App

Wireless Control

PolarPilot App
  • Our free PolarPilot app (Android and iOS) allows real-time wireless control over your analogue patterns, high-pass, and pad in realtime via Bluetooth
  • Save, recall, and share favourite settings
  • Discover and create 255 discrete polar patterns
  • One setting may be stored in OC818 for use without the PolarPilot app
  • The OC818 is always pure analogue: only the analogue bias voltages are being governed remotely
  • Switching also is always analogue
  • No digital in either the audio or bias paths. It’s everything you want, with none of what you don’t
  • 60 second OC818 clipping monitor/logger
  • Wireless control from the comfort of your chair


Open-Source Plug-In

  • Design the polar pattern of your dreams
  • Craft different polar pattern responses across 1-5 crossover bands
  • Store, recall, and share presets
  • Powerful terminator AI for eliminating or rescuing selected frequencies and instruments
  • EQ control for imprinting the tonality of free-field or diffuse-field idealised responses
  • Solo/mute each band
  • Full automation
  • Phase linear
  • Optimised for use with the OC818 in Dual Output mode, however works with any dual output source
  • Ideal for busy sessions: tune instrument pickup during the mix stage
  • Formats: VST3, AAX, AU (OSX 64 Bit / Windows 32 & 64 Bit)
  • Mac requirements: OSX 10.7 or later
  • Windows requirements: Windows 7 or later


Open Source Ambisonic Plug-in

  • Create an ambisonic B-format signal with two OC818 microphones
  • More Infos here


Open Source StereoCreator Plug-in

  • Stereo with one OC818
  • Three different stereo techniques with fantastic post-processing possibilities using two OC818s
  • One four-channel recording, three different stereo techniques (XY/MS/Blumlein)
  • Adjust spatiality in post processing
  • Change stereo width in post processing
  • Change orientation in post processing

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.

Ulrich Lorscheider

using OC818

Accessories & Sets

OC818 Studio Set black

OC818 Studio Set black

Studio Set

OC818 Black Dual Set Plus

OC818 Black Dual Set Plus

Dual Set Plus

OC818 Dual Set Plus

OC818 Dual Set Plus

Dual Set Plus



Bluetooth Dongle



Microphone Shock Mount



Microphone Clamp






Mini XLR Cable



Pop Filter



Alu Dual Case for OC818/18 Mics


Where to buy

Find an authorised dealer or distributor near you

Stay informed

Newsletter subscription

Sound samples

Technical Specifications

Directional characteristics:
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):
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)
157 x 63 x 35 mm
Switchable pad:
-10 dB, -20 dB
Analog Low Cut filter:
40 Hz (2nd order), 80 Hz (2nd order), 160 Hz (1st order down to 80Hz, 2nd order below)