Product picture - DPA Microphones Diffuse-field Frequency Altering Grid for DPA 4003, 4006, 3503, 3506, 4051, 4052 and 4053 Microphones DPA, Microphones, Diffuse-field, Frequency, Altering, Grid, DPA, 4003, 4006, 3503, 3506, 4051, 4052, 4053, Microphones Click the image to close this page