Welcome to the "THYXGS" shop. Features: 1. Each section of equalization has an LED spectrum indicator to help users clearly see the pitch level during use. 2.The front panel has a USB interface, which can be directly connected to the computer with a data cable. It has Chinese and English debugging software and an operation process based on the signal flow. The operation is simple and convenient. Specification: Product name: 31-Band Stereo Graphic EQ Voltage:110V/220V Power consumption: 30W Frequency response:20Hz-20KHz Sound transmission gain: 1dB/1 1dB Signal-to-noise ratio: 82dB Package: 31-Band Stereo Graphic EQ*1