1. The bias voltage board can be applied to other triode front-mounted printed circuit boards, suitable for DIY use by friends with strong manual skills, friends who have no practical ability, please buy our front panel + polarizing plate
2.60V single output, +-60V dual output, +60V dual input, +60V and +120V dual output, can be according to the bias voltage 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 strong enough, and the sensitivity is high enough under 60V voltage, 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 ratio: 60db
Power supply: 15-48V phantom power
Working current: 3.1ma
: DIY production repair modified circuit board
Colour:Red
Material:PCB+metal
Size:45x15.8mm

Package Contents:
1* Microphone circuit board