• Preamp GB30 preamplifier and precise equalizer circuit
• Real seven generatrix structure
•| 2 groups of stereo input , 2 group stereo return
•| Channels direct output
•| Convenient talk-conversation
•| 100mm fader(attenuator)
•| Four channels into a GROUP --+48V phantom power selection
•| 6 groups of AUX output, 4 GROUPs of Aux can choose pre/post fader
•| 18dB/ double frequency route with steep high pass filters
•| Insert point can be added into total output or group output channel
•| 12 segment of LED level
•| Built-in PSU power supply, innovative GB30 preamp and EQ.