1. The board can be applied to other triode front-mounted printed circuit boards, suitable for DIY use by with strong manual skills, who have no practical , buy front panel + polarizing plate 2.60V single output, +-60V dual output, +60V dual input, +60V and +120V dual output, can be according to the of the diaphragm, single output is suitable for single-layer, double-diaphragm microphones Output, suitable for dual-diaphragm microphone head 3. It is recommended to use +60V and +120V dual output versions. If you feel that the sound is not strong enough, and the sensitivity is not high enough under 60V , you can switch 120, and then you can connect a switch parameter: Product name: Microphone circuit board Microphone type used: diaphragm, mid-diaphragm condenser microphone (suitable for diaphragms with a diameter of 25mm or less) Frequency response: 40hz-16khz Sensitivity: -48db Output impedance: 250 ohms Maximum sound pressure level: 125db Signal to noise : 60db Power supply: 15-48V phantom power Working current: 3.1ma Purpose: DIY production repair modified circuit board Colour:Red Material:PCB+metal Size:45x15.8mm Package Contents: 1* Microphone circuit board Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.