Feature:1. High Gain of 28dB: When combined with a sound card and microphone, the in line mic preamp provides a pure gain of 28dB, effectively boosting the voice signal and making post processing of sound more seamless.2. Lossless Amplification: The microphone preamp's gain effect minimally affects the original sound quality, while also reducing the noise issues that may arise from excessive gain in the sound card itself, ensuring a worry free experience.3. Plug and Play: Simply connect the microphone preamp to the mixer, and power it using the 48V phantom power supply from the microphone input on the sound card. This provides a fixed gain volume of 28dB. (Note: The preamp may drain the 48V phantom power, so it is not suitable for capacitor microphones that require phantom power.)4. Stylish and Durable: With a sturdy matte metal casing, the microphone preamp boasts a stylish and minimalist design. It is compact, lightweight, and portable, making it convenient to carry around.5. Versatile Applications: Ideal for studio recording, live news broadcasting, stage performances, large scale speeches, home entertainment, musical instrument playing, and other scenarios.Specification:Item Type: Inline Microphone PreampMaterial: Aluminum AlloyWeight: Approx. 60g or 2.1ozGain Boost: 28dBConnector: XLR 3 Pin Male or FemalePower Supply: 48V According to IEC 61938Frequency Range: 10 to 120000HzImpedance: 135 OhmsRecommended Impedance Electronic Load: andgt 1k OhmsSampling Rate: 24 Bit or 48kbps SoundSignal to Noise Ratio: 3.0mAOutput Noise: 9uV (JIS A)Maximum Input Level: 8.3dBV or 2.6V (0.5 percent THD).Package List:1 x Microphone Preamp1 x User Manual