Product Detail Pair of professional condenser microphones 3/4 inch, 6-micron Mylar evaporated gold diaphragm Solid brass backplate Class-A FET electronics Switchable 10dB pad and 80Hz high-pass filter . The "M-Audio Pulsar II Matched Pair Small-Diaphragm Studio Condenser Microphones" is best product for you. We recommended M-Audio Pulsar II Matched Pair Small-Diaphragm Studio Condenser Microphones