Specifically designed for seamless integration with DPA 4000 series microphones Innovative 40mm sphere-shaped Acoustic Pressure Equalizer Enhances directivity of recordings with on-axis boost and off-axis attenuation Allows modification of spectral characteristic by altering angle of incidence Provides naturalness and detail in audio recordings across diverse environments Replaces former L40B, offering backward compatibility with 4003, 4006, and 4006-TL models