Feature: 1. 112 kinds of electric sound, 18 kinds of sound effects, 6 kinds of effect modes. 2. Reverberation size adjustment, microphone volume adjustment, high ba adjustment, recording volume control, music volume control, monitoring volume control (earphone function). 3. Support mobile phone computer use, support the use of single headset. 4. 7 kinds of connecting methods: one cell phone K song live, double cell phone live, three mobile phone live, mobile phone computer synchronous live, one computer live, computer accompaniment cell phone live, instrument input cell phone live. 5. Bluetooth function Packing list 1 x Sound Card 2 x Audio Cables 1 x USB Cable 1 x English User Manual Does not include other displayed acceories