1、Plug and Play: Connect the amplifier directly to the mixing console, and turn on the 48V phantom power supply of the sound card at the microphone input interface to provide power to the microphone amplifier. This provides a fixed gain volume of+28DB, which is simple and convenient (capacitor microphones that require phantom power are not suitable because the amplifier will deplete the 48V phantom power supply). 2、28DB High Gain: When combining the sound card and amplifier, it can provide a pure gain of 28DB, which is equivalent to increasing the direct drop of the sound card amplifier by 28DB, making post processing sound more convenient. 3、Lossless Amplification: The gain effect of the amplifier hardly affects the initial sound quality received, but can actually reduce the noise problem caused by excessive gain of the sound card itself, which can be used with confidence. 4、Multi Scenario Application: 28dB gain range microphone preamp is suitable for studio recording, news live streaming, stage performances, large scale speeches, home entertainment, instrument performance and other scenarios. 5、Fashionable and Durable: The inline microphone preamp features a sturdy matte metal casing with a stylish and minimalist appearance, top notch texture, slim and lightweight design, making it very convenient to carry around. 1 x Gainer 1 x Manual 1 x Storage Bag  Item Type: Inline Microphone PreampMaterial: Aluminum AlloyWeight: Approx. 61g / 2.2ozGain Increase: Up to +28DB GainConnection Port: XLR 3 Pin XLR Male/FemalePower Supply: 48V According to IEC 61938Frequency Range: 10-120000HzImpedance: 135OhmsSuggested Impedance Load:>1k OhmsSampling Rate: 24 bit/48kbps SoundSex to Noise Ratio: 3.0mAMaximum Output Level: 9UV (A)Maximum Input Level: 8.3dBV/ 2.6V ( 0.5%) THD at 1kHz)