... usb+amplifier+display (3)different appearance design (4)exquiste look BK-pMX 806/806D-usb/ 808D ... 2 3, frequency response frequency response: 20Hz-20khz 4, maximum output level Max output level: 20dBm 5, ... 8/12/16 channel built-in digital effects stereo powered mixer 2, 6 / 8/12/16 channel mono microphone ... balance input. 3, channel settings the INSERT and gain switch, 3-band EQ. 4, the master stereo ...