
Soundcraft
Soundcraft Si Expression 1 Digital 16-Channel Mixer
★★★★★
A compact 16-channel digital mixer with 66 input channels, dedicated processing, and 64x64 expansion.
$4,120.00*
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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
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
How many total inputs can the Si Expression 1 handle?
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.
What onboard processing is available per channel?
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.
What does the ViSi Connect expansion slot provide?
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.
Are the faders motorized and assignable?
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.
Is the Si Expression 1 suitable for installed sound or only touring?
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.