Soundcraft / Si Expression 3 Digital Mixer

The fader glow system changes the color of the fader interior depending on its function, providing an intuitive operation feel. The DSP jointly developed with STUDER delivers uncompromising sound quality.

■ Number of Channel Faders: 30
■ Number of Processable Channels*: 66
■ Input/Output Terminals
- Mic/Line Inputs (XLR): 32
- Stereo Line Inputs (Phone): 2
- Digital Inputs (AES/EBU, XLR): 1 (2ch)
- Line Outputs (XLR): 16
- Digital Outputs (AES/EBU, XLR): 1 (2ch)
- Word Clock (BNC, 75Ω): 1
- MIDI IN/OUT: 1 each
- HiQnet: 1
■ Busses
- L/R/MONO Buses: 1 each
- AUX Buses: 8 mono + 6 mono or 6 stereo switchable
- Matrix Buses: 4 mono or 4 stereo switchable
- FX Buses: 4
■ AD-DA Conversion: 24-bit/48kHz
■ Internal Processing: 40-bit floating-point calculation Latency: 0.8ms or less (mic/line input to line output)
Power Supply: AC 100V, 50/60Hz
Power Consumption: 130W
Dimensions (excluding protrusions): 928W x 153H x 507W mm
Weight: 20kg

*This is the total value for mono input channels + stereo line inputs + FX returns when using a stage box to expand the mono input channels to 54, counting 2 stereo line inputs as 4 channels and 4 FX returns (4 stereo) as 8 channels.

From the distributor website
Flexible Bus Configuration
6 of the 14 mono AUXs can be switched to 6 stereo AUXs. AUX bus output can be switched pre/post for each channel, allowing for flexible configuration to suit your needs. The 4 mono matrix can also be switched to 4 stereo matrix.

Channel Fader Assignment and Flexible Patching System
Inputs, bus outputs, VCAs, and DMX outputs can be assigned to any channel fader (VCA and DMX are available on Si Performer only). This allows frequently used functions to be consolidated into a single fader layer, significantly improving operability. The highly flexible patching system also allows you to send all input signals to any channel, or all bus signals to any output terminal. Combining these two features allows for flexible signal control.