The MKH 20 is usually used as a main microphone for orchestras and solo instruments, and picks up the natural acoustics of the room, though it does have a much wider range of applications as omni-directional microphones do not suffer from 'proximity effect.
Features
Exceptionally flat frequency response, switchable for near and diffuse field applications
High-frequency response can be accentuated by means of a pressure build-up ring
Slightly increasing directivity at high frequencies to adjust tonal balance
Exceptionally low inherent self-noise
Transformerless and fully floating balanced output
Sennheiser MKH 20-P48 OMNI-Directional Studio Microphone
Omni-directional RF condenser microphone. Ideal as a main microphone for orchestras and solo instruments. Picks up the natural acoustics of the room. Exceptionally low inherent self-noise. Light metal body.