microphone type large diaphragm condenser microphone product contents microphone, shock mount, hard mount, and wood box polar patterns capsule diaphragm cardioid, figure of eight, and omnidirectional WA-87-B-50V K87 capsule reproduction 6 micron thickness, 1 inch diameter, 24k gold sputtered membrane, NOS Japanese mylar (PET film) output transformer CineMag USA frequency response 20hz - 20khz SPL .