1. Three frames for 16,24 and 32 channels
2. Preamp GB30 preamplifier and precise equalizer circuit
3. Real seven generatrix structure
4. 2 groups of stereo input , 2 group stereo return
5. Channels direct output
6. Convenient talk-conversation
7. 100mm fader(attenuator)
8. Four channels into a GROUP --+48V phantom power selection
9. 6 groups of AUX output, 4 GROUPs of Aux can choose pre/post fader
10.18dB/ double frequency route with steep high pass filters
11.Insert point can be added into total output or group output channel
13.12 segment of LED level
14.Built-in PSU power supply, innovative GB30 preamp and EQ