Hello. I need a high quality microphone amplifier circuit. Conditions from -20 to +60 Celsius, humidity up to 100%. Distance to the object from 3 (60%) to 5 meters. The distance from the amplifier to the recorder is 3 meters. Frequencies up to 1300 Hz (it is very important that there are no frequencies higher). The cost of all components except PCB is up to $ 10. The microphone must be built into the amplifier.