The Soundcraft Si Expression 2 is a 24-channel digital mixer with 24 recallable mic preamps, 4 line inputs, and the capability to handle up to 66 inputs for mixing. A color touchscreen provides intuitive control, and FaderGlow™ illuminates the motorized faders in different colors to indicate their function. The mixer features a comprehensive automation system with four mute groups and extensive signal processing, including a 4-band British EQ, compressor, gate, and delay on every input and output. Four stereo Lexicon effects engines are built-in for high-quality audio effects. An integrated 64x64 expansion slot supports optional ViSi Connect cards for formats such as MADI, Dante, BLU Link, and others, offering extensive connectivity options for live sound applications.