Uses MC33202 operational amplifier to deliver clear sound with no distortions or noise, enhancing recording and playback clarity. Builtin 150 mAh battery provides about 10 hours of continuous use after a full charge, supporting extended sessions without frequent recharging. 020 dB adjustable gain control allows precise mic output levels and helps prevent clipping or weak signals under varying speaking distances. Powered by DC 512V, with a 3.5 mm port that is suitable for capacitive or inductive microphones, ensuring compatibility with a wide range of mic types. Simple, straightforward interface designed for reliable performance in everyday setups. Use scenarios Home recording and podcasting: achieve clean vocal tracks with adjustable gain to match room acoustics and mic type, reducing the need for post processing. Onlocation interviews and field reporting: portable power option and flexible gain control help maintain consistent audio quality in changing environments. Live streaming and video conferencing: stable microphone output levels and clear sound reproduction contribute to professional, distraction broadcasts.