Product features:1. It has dynamic anti howling function, multe reverberation effects, hall room effects, delay, choir, electric sound, etcIf the machine to be modified ly had a reverberation circuit, it can be shared with this module without the need to remove the reverberation circuit3. The USB port can be connected to a computer for upgrading and tuning, and is not a concern for daily use. When encountering a hung sound, please reconnect the ground wire to the board.4. Easy to use, the effect type can be rotated to select a number, pre to confirm5. With a display screen, the display effect size is 0-99, and there are 100 types of effects availableAttention: There is no reverberation in the electronic sound effect, which is limited by the chip function. The effect volume can be adjusted up or down, but cannot be completely turned off.Product s:Working voltage: DC 5VCurrent: around 70maCircuit board size: 33mm * 80nterface Description:Output: LOUT, GND, ROUTInput: RIN, GND, LINSocket: XH2.54Product List:1 * Module