Builtin 150 mAh battery provides about 10 hours of continuous use after a full charge, allowing longer sessions without frequent recharging. 020 dB adjustable gain control with DC 512 V power enables precise microphone output levels, adaptable to different microphones and environments and helping to prevent clipping or underrecording. MC33202 operational amplifier delivers clear, lownoise audio with minimal distortion, ensuring accurate voice and instrument capture. 3.5 mm port supports capacitive and inductive microphones, providing straightforward compatibility with standard mics without the need for adapters. Compact, selfcontained design combines power and mic interface in one unit, suitable for portable recording, desktop setups, and onthego use. Use scenarios Field recording and onlocation interviews: connect a handheld or lapel microphone, adjust gain to suit mic sensitivity and ambient conditions, and rely on the builtin battery for extended sessions without access to a power outlet. Desktop podcasting or voiceover: place the device on a desk, use the 020 dB gain control to maintain a consistent vocal level, and enjoy clear, lownoise output during recording. Classroom or meeting room capture: set up quickly to record lectures or presentations with clear speech, leveraging the portable, selfcontained unit for reliable audio in a variety of room environments.