상황
A battery-powered binaural microphone preamp preserves stereo cues for ASMR recording. Each channel uses a JFET common-source stage for low noise and high input impedance.
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JFET common-source input for low noise and high input impedance
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Separate, symmetric left/right channels with independent bias and output coupling
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Single 9V battery supply with source bypass capacitors for stable gain
Use this pattern when drawing battery-powered low-noise audio preamps with matched stereo channels, electret or condenser mic inputs, or portable ASMR recording circuits.