This module is only a part of the reverberation circuit and requires a large number of peripheral circuits to cooperate. There is no microphone amplification hybrid circuit, and users need to be proficient in the circuit and have the ability to independently analyze the circuit; There are 100 effects from 0 to 99, rotate the encoding switch to select a number, and to confirm; Working voltage DC5V, working current 72ma, power consumption 0.36w; The input signal range is 1-10vpp, with a maximum output of 5vpp. Rotate the switch to select a number, down on the switch to confirm<br><br> 0-99 effect type: 00~02 small hal, 03~05 medium hall, 06~08 large hall, 09 church, 10~12 small room, 13~15 medium room, 16~18 large room, 19 hal,84~85 Reverb+phase shift, 20~26 with metal acoustic reverb, 27~29 Spring reverberation, 30~35Reverberation door, 36~39 Reverse reverb, 40~43 Early reflection, 44~47 Atmosphere effect, 48 stadium, 49 Ambient effect FX, 50~58 Delay 59 , 60~65 chorus, 66~69 Flange, 70~73 Phase shift, 74~79 Tone, 80-81 Reverb+chorus, 82~83 Reverb+chrome, 86~87 Reverb+tone, 88~89 Delay+reverb, 90 Delay+reverberation gate, 91 Delay+reverse reverb, 92~93 Delay+chorus, 94~95 Delay+chrome, 96~97 Delay+phase shift, 98~99 Delay+ position Color: Blue Material: ABS<br><br>Package Contents: 1 * Digital Reverberation Module<br><br>Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.