Description: Features: A diameter of 34 mm / 1.34 Inch large diaphragm core more delicate more discrimination and clear sound collection makes the soft alto deep and rich bass vividly feedback. High Quality Diaphragm: The gold plated layer of this large diaphragm is coated with gold wire with high achieve higher sensitivity making them able to reproduce subtle sounds make the sound delicate and natural and have a wide frequency response Professional Studio : This can be widely used in such professional situations as recordings broadcastings stage performances post production of film and TV programs personal computer home recording and so on. Power Requirement: The real large diaphragm needs 48V and it needs to be MATCH with the circuit board! If the circuit board of your is a small diaphragm or mid diaphragm on the market this is not supported Attention:1. plated film on the top and the back film with your hands.2. turn any screws on it. 3. or spray water head.4. Pay attention to moisture and wear windproof cotton or spray cover when using.5. Please be cautious when handling and disposing. Man made damage is at your own risk. Size Chart: Frequency response: 20Hz~20KHz Sensitivity: -35dB±3dB(=1V/Pa at 1KHz) Directivity: single sided Maximum sound pressure level: 14 (at1kHz=1%T.) Supply voltage: Power Use temperature: 5-35 degrees Power Requirement: 48V Package Includes: 1 Piece Condenser