The active front capsule requires 48V phantom power and, at 4.4 mV / Pa, has almost the same sensitivity as a condenser microphone. With its active circuitry, the OD505’s sound is always consistent, regardless of the internal resistance of the microphone preamplifier or length of connecting cables. The passive lower capsule is polarity-rotated, it senses and reduces unwanted handling noise, especially at the lower frequencies.

The OD505 also includes another Austrian Audio proprietary development: The 3D Pop Noise Diffuser. This filter is specially designed for the OD505 and effectively reduces the impact of plosives.