Features: 4-way microphones mixing box: Supports 4-way microphones input mixing to meet the needs of multiplayer meetings, speeches, and other scenario. Stereoed output: Provides stereoed output function to enhances effects and provide users with a more immersived auditory experience. With reverberation highly and low frequency adjustment: Equipped with reverberation and highly and low frequency adjustment functions, users can adjust sound quality effect according to their preference. USB 5Volt power: Adopting USB5V power design, it is easy to connection to various devices, flexible and convenient. Multifunctional application: suitable for various occasion such as recording studio, KTVs, and studio, to meet needs of different users. Specifications: Color: Black Size: about 165x82x38mm/6.5x3.23x1.5inch Microphones input impedance: 2KΩ Output level: ≥20mV Microphones input sensitivity: ≥ 5m Signal to noise ratio: ≥ 78dB Frequency response: 10Hz-20KHz Digital reverberation time: ≥ 150ms Power: USB 5Volt, direct insertion and use Package Includes: 1x 4-Way Microphones Mixer note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.