It is a circular microphone, mainly used for high-frequency output. Singing and speaking sounds are effortless and easy to handle. Surround sound and stereo are more obvious.  Sensitivity:-33 1dB;  Output impedance:2.2K;  Electric current:150-500uA;  S/N:66;  Voltage reduction sensitivity:-3dB;  Operating Voltage:1.5-10V;  Frequency response:100-15KHz;  Maximum input sound pressure level:120dB;  V9X PRO Sound Card;    Feature: Imported noise reduction dual chip-  Four core 8 times speed increase 80-320mhz, stable and clear, high sensitivity, wide dynamic range.  Intelligent and compatible-  Compatible with 99% live and Karaoke software on the market.  Professional tuning independent adjustment-  12 kinds of tones make the electric sound modification more shocking.  48V power supply&OTG lossless live broadcasting-  OTG lossless connection is adopted. When the computer is connected to set and broadcast, it has the characteristics of real-time transmission of audio signal adn easy output of lossless sound quality.  Double thruster precise adjustment-  Record and reverb size, embellish bass, make singing bery crisp.  Atmosphere effect-  With the host control field sound effect, the background accompaniment import one key control field dryness.    Parameters: Bluetooth version:5.0;  Main chip:imported Dual DSP;  Recording:16bit/48 Playback:16bit/48Hz SNR 105db;  Distortion:0.1%;  Output power:329thd + n =0.1%;  Power consumption:5W;  Rated Input Voltage:5V/1A;  Charging Current:500mA;  Frequency range:20-20KHz;    Package Included: 1 x K20 Microphone;  1 x V9X PRO Sound Card;   1 x Adjustable Microphone stand;  1 x Microphone windscreen;  1 x USB charging cable;  1 x computer data cable;  2 x 35mm live recording cable;  1 x English Manual