Brand: Shure (OEM)
The Shure (OEM) MRD4 E is an electret condenser microphone capsule designed for original equipment manufacturer (OEM) applications. The label "MRD4 E" indicates that this is a polar pattern microphone designed for cardioid pickup, which is commonly used to reject unwanted background noise and pick up the sound of the speaker's voice or instrument. The "E" at the end of the label denotes that this is an electret condenser microphone, which uses a permanently charged capacitor to provide a strong electrical signal without the need for a battery or external power source. This capsule is widely used in OEM applications in professional audio equipment, such as wirelessly operated microphones, conference systems, and specialized recording equipment.