24 (32 - Si Expression 3, 16 – Si Expression 1) mono mic inputs

4 line inputs
Colour touch screen interface
66 channels to mix possible
Pre/Post selection per input per bus
AES in and out
Global mode encoders
Soundcraft FaderGlow™
GEQ on every bus
20 sub-group / aux busses
4 FX busses
8 Matrix busses
LR and C Mix busses
4 Stereo Lexicon Effects engines
Delay on inputs and outputs
4 Mute Groups
Freely assignable insert loops
Harman HiQnet integration
64x64 channel option card slot