Soundcraft SI-EXPRESSION-2 Powerful Digital ConsoleThe Soundcraft Si Expression 2 Digital Mixer is a digital mixing console designed for live sound applications. The mixer features 24 microphone preamps, 4 line inputs, AES in, 4 internal stereo FX returns, 22 faders, a 64 x 64 expansion slot for additional routing possibilities, and 66 input processing channels. Every input processing channel on the board can be routed through a dedicated high pass filter, input delay, compressor, gate, and four band