DiGiCo S31

General Specifications

• 46 busses: 16 x flexi-busses Mono/Stereo (equivalent of 32 DSP busses), Stereo Master (2), Solo busses (2 stereo, 4 total), and 10 x 8 Matrix (8)
• 10 x Control Groups
• 1 x Compressor per channel and buss
• 1 x Gate per channel and buss (switchable to ducker, or compressor with side chain access)
• 16 x assignable 32 band Graphic EQs
• 8 x FX engines (reverbs, delays, w/modulation and enhancer)
• 4 x assignable DiGiTuBes
• 4 x assignable Multiband Comps
• User definable Macros
• An extremely high power headphone amplifier with 1/4 inch and mini jack socket
• 96kHz as standard
• 24 mic line inputs
• 12 analogue outs
• 2 AES I/O (mono)
• Word Clock I/O
• 1 GPI and 1 GPO
• DVI out (for an external monitor)
• 2 DMI Card slots (up to 64 I/O per slot)
• 2 Ethernet connections for Networking
• 2 x 24 segment master/solo meters
• Touch sensitive rotaries with integrated switch & HTL
• 3 x multi-touch screens
• 31 x touch sensitive moving faders
• 4 x layers of banks of 10 faders
• Customisable bank and channel layout
• Snapshots
• Integrated USB2 Audio I/O interface for recording and playback of up to 48 channels 40 x Input flex-channels Mono/Stereo (equivalent of 80 DSP channels)

Audio Specification

• Sample Rate 48kHz, 96kHz
• Processing Delay 2ms Typical @ 48k(60 Stereo Channels, Stage
• Input Through L-R Buss to Stage Output) 1.1ms @ 96kHz
• Internal Processing Up to 40-bit, Floating Point
• A>D & D>A 24-bit Converter Bit Depth
• Frequency Response +/- 0.6dB (20Hz – 20kHz)
• THD <0.05% @ Unity Gain, 10dB Input @ 1kHz
• Channel Seperation Better Than 90dB (40Hz – 15kHz)
• Residual Output <90dBu Typical
• Noise (20Hz - 20kHz)
• Microphone Input Better Than -126dB Equivalent Noise
• Maximum Output Level +22dBu
• Maximum Input Level +22dBu

Processing Channel Specification
Input Channel

• Input Name User-Defined
• Channel Selection Mono / Stereo
• Input Routing Main Input
• Analogue Gain -20 to +60dB
• Phase Normal / Reverse
• Digital Trim 40 to +40dB
• Delay 0 - 682ms
• DiGiTuBe Drive 0.01 - 50.0
• Bias 0 - 6
• LPF 20 – 20kHz, 24dB/Oct
• HPF 20 – 20kHz, 24dB/Oct
• Insert A (Pre EQ/Dyn) On/Off
• Equalisation 4 Band EQ: Parametric or Dynamic (Low/Lowshelf, Lower-Mid/Lowshelf, Upper-Mid/
  Hishelf, Hi/Hishelf)
  On/Off
  Freq; 20 – 20kHz
  Gain; +/- 18dB
  Q: 0.1 -20 (Parametric) / 0.10-0.90 (Shelf)
• Dynamics 1 Single or 4 x Multiband (3-Band)
  Compressor On/Off
  Threshold; -60 – 0dB
  Attack; 500us – 100ms
  Release; 5ms – 5s
  Ratio; 1:1 – 50:1
  Gain; 0 to +40dB
  Hi Crossover; 20Hz – 20kHz
  Lo Crossover; 20Hz – 20kHz
  Knee : Hard, Med, Soft
• Dynamics 2 On/Off
  Gate / Ducker Threshold; -60 – 0dB
  Attack; 50us – 100ms
  Hold; 2ms – 2s
  Release; 5ms – 5s
  Range; 0 - 90dB
  Key; Any Source
  Key Listen
  Freq/Width; 20 – 20kHz
  Compressor On/Off
  Threshold; -60 – 0dB
  Attack; 500us – 100ms
  Release; 5ms – 5s
  Ratio; 1:1 – 50:1
  Gain; 0 to +40dB
  Link; Any Channel / Buss
  S/C Source : Any Source
  S/C Listen : On/Off
  S/C Filter Freq/Width: 20Hz – 20kHz
• Insert B (Post EQ/Dyn) On/Off
• Mute Channel Mute
• Solo Solo Buss 1 / Solo Buss 2 / Both,
• Channel Safe Socket Properties, Input Route, Mono/Stereo, Label, Filters, Trim, Delay, Tube, Insert A, EQ, Dyn1, Dyn2, Insert B, Aux, Group Assigns, Pan, Fade, Mute, Direct Outs, Full Safe
• Output Routing Buss,
• Insert A, Insert B,
• Direct: Post-Fade
• Fader 100mm Motorised Fader ∞ to +10dB

Processing Channel Specification
Aux / Group / Matrix Output

• Name User-Defined
• Phase Normal / Reverse
• Digital Trim -40 to +40dB
• Delay 0 - 682ms
• DiGiTuBe Drive 0.01 - 50.0 Bias 0 - 6
• LPF 20 – 20kHz, 24dB / Oct
• HPF 20 – 20kHz, 24dB / Oct 
• Insert A (Pre EQ/Dyn) On/Off
• Equalisation 4 Band EQ: Parametric or Dynamic (Low/Lowshelf, Lower-Mid/Lowshelf, Upper-Mid/Hishelf, Hi/Hishelf)
  On/Off
  Freq; 20 – 20kHz
  Gain; +/- 18dB
  Q: 0.1 -20 (Parametric) / 0.10-0.90 (Shelf)
• Dynamics 1 Single or 4 x Multiband (3-band)
  Compressor On/Off
  Threshold; -60 – 0dB
  Attack; 500us – 100ms
  Release; 5ms – 5s
  Ratio; 1:1 – 50:1
  Gain; 0 to +40dB
  Hi Crossover; 20Hz – 20kHz
  Lo Crossover; 20Hz – 20kHz
  Knee : Hard, Med, Soft
• Gate / Ducker Threshold; -60 – 0dB
  Attack; 50us – 100ms
  Hold; 2ms – 2s
  Release; 5ms – 5s
  Range; 0 - 90dB
  Key; Any Source
  Key Listen
  Freq/Width; 20 – 20kHz
  Compressor On/Off
  Threshold; -60 – 0dB
  Attack; 500us – 100ms
  Release; 5ms – 5s
  Ratio; 1:1 – 50:1
  Gain; 0 to +40dB
  Link; Any Channel/Buss
  S/C Source : Any source
  S/C Listen : On/Off
  S/C Filter Freq/Width: 20Hz – 20kHz
• Insert B (Post EQ/Dyn) On/Off
• Mute Channel Mute
• Solo Solo Buss 1 / Solo Buss 2 / Both,
• Channel Safe Mono/Stereo, Bus Mode, Label, Filters, Trim, Delay, Tube, Insert A, EQ, Dyn1, Dyn2, Insert B, Group Assigns, Fade, Mute, Direct Outs,
  Full Safe
• Output Routing Outputs, Insert A, Insert B
• Fader 100mm Motorised Fader ∞ to + 10dB