1. Professional audio mixer, 8-channel input2. 48V phantom power3. Bluetooth wireless connection4. Support USB/computer playback5. Independent mute button6. MP3 independent controlSpecification: Package Weight One Package Weight 4.00kgs / 8.83lb One Package Size 45cm * 46cm * 12cm / 17.72inch * 18.11inch * 4.72inch Qty per Carton 5 Carton Weight 22.50kgs / 49.60lb Carton Size 55cm * 46cm * 46cm / 21.65inch * 18.11inch * 18.11inch Loading Container 20GP: 229 cartons * 5 pcs = 1145 pcs 40HQ: 531 cartons * 5 pcs = 2655 pcs