Adjusting knob design, with 12 kinds of electronic sound and 14 kinds of warm sound effects, support sound elimination, live singing, one-key avoidance, real-time monitoring. Powerful DSP audio chip, stable signal, good sound quality, no delay.Multi-function, support BT accompaniment. Elegant texture and workmanship, electroplating buttons, electroplating buttons. Support the simultaneous connection of two microphones, and the treble, midrange and bass can be adjusted independently. Smart compatible mobile phone/computer live broadcast. Type: sound card Pointing feature: cardioid pointing Channel: 2 Input voltage: 220V Signal-to-noise ratio: equal 70db Frequency response range: 100HZ-20KHZ Colour:black Material:plastic Size:225 x 165 x 45mm Package Contents: 1 x Sound Card 1 x Charging Cable 1 x Live Cable 1 x Accompaniment Cable 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.