Soundcraft

Soundcraft Si Expression 1 Digital 16-Channel Mixer

4.1 (14 reviews)

A compact 16-channel digital mixer with 66 input channels, dedicated processing, and 64x64 expansion.

$4,120.00*
In Stock on Amazon.com
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*Price sourced from Amazon.com. Last updated:Jun 19, 2026.Price and availability are subject to change.

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Overview

The Soundcraft Si Expression 1 is a digital live sound console built around 16 recallable mono mic preamps, 4 line inputs, and internal stereo effects returns, all feeding a mixing architecture capable of handling 66 input processing channels. Each channel benefits from a complete processing chain — high pass filter, input delay, noise gate, compressor, and four-band parametric EQ — giving engineers thorough control without relying on external rack gear. The freely assignable fader surface lets operators customize their layout for each show, placing the most critical channels at their fingertips.

A single ViSi Connect option card slot provides 64x64 input/output expansion, enabling integration with digital stage boxes, Dante networks, or multitrack recording interfaces. The console's comprehensive automation system stores and recalls scenes, making it efficient for venues hosting varied events or touring productions that need consistent, repeatable setups. Despite its powerful feature set, the Si Expression 1 maintains a relatively compact footprint, making it a practical choice for small-to-mid-sized venues, houses of worship, and touring rigs where space is limited but processing demands are high.

Key Features

16 (24 - Si Expression 2, 32 - Si Expression 3) mono mic inputs

4 line inputs

66 inputs to mix

1 ViSi Connect option card slot for 64 x 64 input/output expansion

Freely assignable faders and patching

This product is sourced from an authorized Soundcraft North American dealer and includes the official Soundcraft manufacturer’s warranty. The warranty is valid only for products purchased from authorized Soundcraft North American dealers within the United States.

Specifications

Mono Mic Inputs
16
Line Inputs
4
Total Inputs to Mix
66
Expansion
1 ViSi Connect option card slot (64x64 I/O)
Faders
Freely assignable
Per-Channel Processing
High pass filter, input delay, gate, compressor, four-band EQ

Pros & Cons

👍 Pros

  • 66 input processing channels provide substantial capacity from a compact 16-fader frame
  • Dedicated per-channel processing with gate, compressor, and four-band EQ eliminates the need for outboard gear
  • 64x64 expansion slot enables significant I/O growth for larger productions
  • Freely assignable faders and full scene recall streamline workflow during complex live events
  • Recallable mic preamps ensure consistent gain settings between soundchecks and shows

👎 Cons

  • Only 16 physical mic inputs on the console itself, requiring an expansion card for larger input counts
  • Single expansion slot limits you to one card, so you must choose between competing I/O formats
  • The learning curve for digital workflow and menu navigation may challenge operators accustomed to analog consoles
  • No built-in touchscreen — parameter adjustment relies on encoders and the smaller integrated display

Frequently Asked Questions

While it has 16 mono mic inputs and 4 line inputs, the console can process up to 66 input channels when you include internal FX returns and expansion card inputs.
Each input channel has dedicated high pass filter, input delay, gate, compressor, and four-band parametric EQ — all recallable with the console's automation system.
The single ViSi Connect option card slot allows you to add 64 inputs and 64 outputs, enabling integration with digital stage boxes, recording interfaces, or networked audio systems.
Yes, the faders are freely assignable, allowing you to customize which channels or buses appear on the fader surface to match your workflow for each event.
It works well for both. Its compact footprint and scene recall make it practical for installed venues, while its robust build and assignable faders suit live touring applications.