Acoustic Sphere (40mm) for Earthworks QTC30 Beta

40mm Acoustic Pressure EQ (spherical acoustic baffle) for use with Eathworks QTC 30 omnidirectional microphones. This attachment subtly changes the frequency response of on-axis signals. Many engineers like the way this attachment boosts high frequency presence in choral and orchestral recordings. The 40mm sphere is most commonly associated with the Neumann M50 microphone design and the Decca Tree.

This is an untested beta design.