Omnidirectional Microphones
Omnidirectional microphones are equally sensitive to sounds 360° around the capsule.
This encompassing polar pattern makes them great for recording stereo ambiences in A-B and ORTF stereo configurations.
Best Budget
Audio Technica AT 4022
With only 13 dBA self noise, the Audio Technica AT4022 are popular omnis for recording quiet natural ambiences on a budget.
They’re about half the cost of the Sennheiser MKH 8020s listed below.
Best Overall
Sennheiser MKH 8020
The Sennheiser MKH 8020 is the lowest noise omni with only 10 dBA self noise.
It is also moisture resistant, making it the premier choice for nature field recordists.