1,Microphone audio adjuster designed for smart phones, DSLR cameras, video cameras. 2,Turn a functionless microphone into a microphone with adjustable audio parameters. 3,Rich radio control, convenient for post-processing working time, three-level level adjustment, VR knob fine-tuning parameters, fine-tuning level, restoring high-fidelity sound source authenticity, rejecting sound source compression. 4,One-key intelligent noise reduction, effectively shielding ambient sounds and echoes, can prevent the noise emitted by the hand when touching the microphone, and can shield the surrounding interference. 5,3.5mm real-time ear-back headphone interface, most of the common headphone connections can achieve synchronous monitoring function, while recording, at any time to record and adjust. 6,With 3.5mm headphone jack, real-time ear return can be realized to ensures normal recording during video recording. 7,Handle design, suitable for a variety of recording devices such as mobile phones, cameras, camcorders and other equipment. Condition: 100 percent Brand New Item Type: Microphone Audio Adapter Brand: LENSGO Model: D1L Material: ABS Color: As picture shown Weight: Approx. 312g Input level: MIC -35dB PAD gain: (0dB, -10dB, and 20dB) Frequency response: 20Hz to 20KHz Input interface:  forTRS 3.5mm Output interface: for TRS 3.5mm Monitoring interface: for TRS 3.5mm Wired or wireless: wired Function: output gain adjustment, high-pass filter adjustment, real-time monitoring Applicable equipment: camera, video camera, mobile phone Power supply: 2 x AA (not included battery) Uses: used for microphone to adjust audio 1 x Microphone Audio Adapter 1 x Camera connecting line 1 x Phone connecting line 1 x Instruction