Goolrc Electret Microphone Amp Adjustable Gain 0?20Db Condenser Mic Headphone Sound Preamplifier Me1 3.5Mm

GoolRC

Electret Microphone Amp Adjustable Gain 0?20db Condenser Mic Headphone Sound Preamplifier ME1 3.5mm.Feature: 1. SUITABLE MICROPHONE: Electret microphone amp input 3.5mm interface built in bias, can be connected to electret microphone head microphone or 3.5 interface capacitor microphone 2. POWER SUPPLY AND OPERATIONAL AMP: Adjustable gain electret microphone amp power supply is DC5?12V, using the rail to rail operational amp MC33202 3. ABOUT INTERFACE: Sound preamplifier output adopt 3.5mm inter