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NEVATON ORTF– Large Dual-Diaphragm microphone for recordings with the ORTF stereo-system

The Nevaton ORTF is a Stereo Condenser Microphone designed for professional ORTF stereo-recordings in pristine quality. It features two perfectly aligned large dual-diaphragm capsules, coupled with ultra-linear (up to one MHz) ‘Class A’ amplifiers and a transformerless circuitry.

The microphone has an excellent transient response, an exceptionally low self-noise of just 4 dBA, and the ability to handle sound pressure levels up to 138dB without any distortion.
The two large 33mm ultra-thin gold coated diaphragms are made of 3-micron polyethylene-terephtalate film and give the Nevaton ORTF its beautiful and transparent sound.

All capsule components undergo a specialized artificial aging process to ensure long-term stability. The internal structure is elastically mounted to dampen vibrations and minimize handling noise. Furthermore, the capsules are secured on newly designed dampers to further diminish mechanical noise.

The microphone features a small LED that signals the availability of 48V phantom power. Each input transistor undergoes a rigorous selection process to ensure minimal self-noise. The microphone’s body is crafted from brass and coated with a dark grey, non-reflective epoxy-based paint. A triple-layer metallic grille provides effective shielding for the transducers against electrical and atmospheric interferences, as well as protection from microscopic dust. The base houses a gold-plated 5-pin XLR connector that pairs with the included breakout cable, which has dual 3-pin XLR connectors. The Nevaton ORTF microphone is presented in a fine hardwood box, complete with an output cable.

The Nevaton ORTF microphone is frequently employed as the primary mic for recording orchestras, chamber groups, jazz concerts, and more. It is equally adept for use in radio and television broadcast applications.


NEVATON ORTF – Technical Data


Capsule diameter

33 mm

Directional pattern


20 – 20.000 Hz

Free Field Sensitivity at 1000 Hz and 1000 Ω

not less than 20 mV/Pa

Equivalent SPL DIN/IEC 651