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Ultra-small volume dynamic microphone preamplifier board, two-channel design, suitable for a single lithium battery-powered, using AD828 fever op amp chip, suitable for low voltage power supply (3.7-15V).
Note: This microphone amplifier board without power regulator circuit, can only use the battery or linear power supply, can not use switching power supply, otherwise there will be interference.
Working Voltage: DC 3.7V-15V
Board Size: 33mm x 20mm (L*W)
Notice: If you only used one channel, the other channel needs to short-circuit the input with GND, To avoid interference with the signal crosstalk.
Packing List:
1pcs x AD828 Stereo Dynamic Microphone Preamplifier Board

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