Soundcraft Si Expression 1 - 16-Channel Digital Mixing Console with 4 Line Inputs and 66 Input Processing Channels in Dark Blue Finish

The Soundcraft Si Expression 1 is a powerful 16-channel digital mixing console designed for live performances, studio recording, and broadcast applications. Compact in size yet robust in functionality, the Si Expression 1 delivers professional-grade sound quality and an intuitive workflow that makes it suitable for users of all levels. Its 16 recallable mic preamps, 4 line inputs, and a built-in 64x64 expansion slot provide a wealth of input options, giving you access to 66 input processing channels. With dedicated processing on each channel, including high pass filters, input delays, gates, compressors, and 4-band parametric EQ, this console delivers precise control over every element of your mix.

The Si Expression 1 also features a total of 14 configurable aux/group mixes and 4 matrix mixes, allowing you to configure these buses in a variety of mono or stereo combinations depending on your needs. Four additional mix buses are dedicated to the internal Lexicon FX processors, which are powered by the same DSP technology found in Lexicon's acclaimed MX400 processor. With 29 different presets per engine and dedicated tap tempo keys, the built-in effects processors provide everything from rich reverbs to creative modulations without consuming any of the console's valuable processing power.

Designed with usability in mind, the Si Expression 1 incorporates Soundcraft's innovative FaderGlow system, which uses colored LED indicators to show which function is currently assigned to each fader. This ensures you always know whether you're controlling a bus mix, FX send, or other parameter. The One Touch Easy Mixing (tOTEM) keys allow for quick and seamless mixing to any bus by simply selecting the desired bus and adjusting the corresponding faders. A color touchscreen provides further control, allowing for easy access to patching, routing, and setup menus.

The Si Expression 1 also includes a comprehensive array of outputs, with 16 balanced line outputs, a headphone monitor output, AES in and out, and support for various digital expansion options such as MADI, Dante, and CobraNet through the 64x64 expansion slot. This flexibility makes the Si Expression 1 ideal for integrating into larger audio systems or connecting to multitrack recording setups. Additionally, the console supports remote operation via the HiQnet Ethernet port and ViSi Remote app, allowing you to control the mixer from your tablet or smartphone.

Built to last, the Si Expression 1 features a rugged, road-ready metal chassis and an integrated power supply. Despite its small footprint, the console provides a vast range of functionality and is perfect for live sound engineers, studios, and broadcast environments that demand top-tier performance. Its compact 19-inch rack-mountable design makes it easy to transport and set up, making it an excellent choice for mobile rigs or installations where space is limited.

Features

• 16 recallable mic preamps and 4 line inputs, with 66 input processing channels
• Comprehensive channel processing including high pass filters, input delays, gates, compressors, and 4-band EQ
• 14 configurable aux/group mixes and 4 matrix mixes with full dynamics, EQ, and delay processing on every bus
• 4 built-in Lexicon FX engines with 29 presets per engine, including reverb, delay, and modulation effects
• FaderGlow technology for intuitive visual feedback of fader functions
• One Touch Easy Mixing (tOTEM) keys for seamless bus mix control
• Expandable I/O with a 64x64 expansion slot for MADI, Dante, CobraNet, and other digital formats
• Comprehensive output connectivity with 16 balanced line outputs, AES in/out, and headphone monitoring
• Built-in color touchscreen for easy access to patching, routing, and setup controls
• Supports remote operation via the HiQnet Ethernet port and ViSi Remote app
• Rugged, road-ready metal chassis with integrated power supply
• 19-inch rack-mountable design for easy portability and installation
• Frequency response: +0/-1dB from 20Hz to 20kHz
• Total harmonic distortion (THD) as low as 0.006% at 1kHz for pristine sound quality
• Operating temperature range: 5°C to 45°C
• Dimensions: 19 x 20.5 x 6.6 inches, weight: 26 lbs

Specifications

• Frequency Response
  • Mic Input to Line Output: +0/-1dB, 20Hz - 20kHz
  • Stereo Input to Master Output: +0.5/-0.5dB, 20Hz - 20kHz
• T.H.D. and Noise
  • Mic Input (Min Gain) to Bus Output: 0.006% @ 1kHz
  • Mic Input (Max Gain) to Bus Output: 0.008% @ 1kHz
  • Residual noise, Master Output, no inputs routed, mix fader @0dB: <-88dBu
  • Mic Input E.I.N. (maximum gain): -126dBu (150Ω source)
  • Mix noise, masters at unity: < -86dBu
  • 1 input to mix at unity gain: -84dBu
  • CMRR mic @1kHz (max gain): -80dBu
• Crosstalk (@ 1kHz)
  • Channel ON attenuation: <120dB
  • Channel Fader attenuation: <120dB
  • Mic - Mic: -100dB @ 1kHz, -85dB @ 10kHz
  • Line - Line: -100dB @ 1kHz, -85dB @ 10kHz
• Input Gain
  • Mic Gain: -5dB - 58dB integrated pad design 1dB steps
  • Line Trim: -10dB - +16dB
• EQ
  • HI MID & LO MID: 22Hz - 20kHz, +/-15dB Q 6-0.3
  • Shelf (HF): 800Hz - 20kHz, +/-15dB
  • Shelf (LF): 20Hz - 500Hz, +/-15dB
  • HPF: 40Hz - 1kHz
  • GEQ: 31Hz - 16kHz 1/3 octave
• Delay
  • User adjustable delay: 1 sample - 500ms
• Digital I/O
  • Converter resolution: 24-bit
  • DSP resolution: 40-bit floating point
• Latency
  • Mic In to Line Out: <0.8 ms
  • Analogue in to AES out: <0.6 ms
  • AES in to Line Out: <0.8 ms
  • AES in to AES out: <0.5 ms
  • Stagebox Mic In to Stagebox: <0.9 ms
• Input and Output Levels
  • Mic Input: +22dBu max
  • Line Input: +22dBu max
  • Mix Output: +21.5dBu max
  • Headphones (@150Ω): 300mW (recommended impedance 32 to 200Ω)
• Input and Output Impedances
  • Mic Input: 2kΩ
  • Line Input: >10kΩ
  • AES Input: 110Ω
  • Outputs: 150Ω (balanced), 75Ω (unbalanced)
  • Word Clock used as Output: 50Ω
  • Word Clock used as Input: 4k7Ω
  • AES Output: 110Ω
• Lamp Output
  • 12V DC: 100mA max (per socket)
• Power
  • Consumption (typical): <130w Si Expression 3
  • AC Input voltage range: 88-264VAC auto sensing
  • AC Frequency range: 47-63Hz
• Operating Conditions
  • Operating Temperature Range: 5°C to 45°C
  • Humidity: 0%-90%, non condensing Ta=40°C (104°F)
  • Storage Temperature Range: -20°C to 60°C (-4°F to 140°F)
• Weights and Dimensions
  • Dimensions: 19 x 20.5 x 6.6 inches
  • Weight: 26 lbs