Features: 1. 12,16,24,32 input channels, 4 groups of stereo line inputs 2. Low-noise preamplifier with strong anti-jamming power 3. Musical EQ with three bands, swept MF can be adjusted from 140Hz to 3 KHz 4. 6 groups of bus (stereo+4 group), three AUX sending and one stereo return 5. High precision 3 -color electric level pole precisely display output level 6. Provide real professional +48V phantom power for condenser mic 7. Built-in DSP effect processor 8. 100MM high level analysis fader 9. Equipped with Signal insertion point, convenient to connect with external signal processor 10.True balance output XLR connector 11. External squelch power supply, convenient and flexible operation to support your scene performance