MMP-R1 
MMIC-9V
Dynamic Low Noise Unbalanced Microphone Preamplifier Board With Gain Control 
MMP-R1 Dynamic Microphone Preamplifier With Low Noise I.C
MMIC-9V Dynamic Microphone Preamplifier With Low Noise Transistors
Assembled Board Ready to use!!!
 High quality and reliability PCB FR4 1.6MM
This item is only PCB with components Assembled
Input & Output Molex Connectors and pins included
Working Voltage : 
MMP-R1 Model: 2X9-15Vdc (Dual DC +v 0 -v)
MMIC-9V Model: 9-18Vdc (Single DC)
Current Consumption: 4mA
Gain Level Control (-4DB to +32db)
PCB Size: 
MMP-R1 40mm*25mm double-sided HAL,FR4 1.6MM 
MMIC-9V 40mm*27mm double-sided HAL,FR4 1.6MM