Pricing and availability
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Price
Average Price: $3,272
High-end/Boutique
$200
$1001+
Price Tier
Budget
Standard
High-end
Price History
Based on price data from 3 merchants for "Soundcraft Si Expression 1 16-Channel Digital Mixer". Prices shown reflect NEW condition. Tracking began Apr 2, 2026.
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Description
The Soundcraft Si Expression 1 16-Channel Digital Mixer is a powerhouse of innovation and design, bringing professional-grade features to an accessible platform. Whether you're a seasoned audio engineer or a passionate amateur, this mixer elevates your craft with its legendary "British sound" and intuitive interface. With 16 recallable mic preamps, 4 line inputs, and 4 internal stereo FX returns, the Si Expression 1 provides ample flexibility for any live or studio setup. The mixer also boasts a 64 x 64 expansion slot, letting you tap into up to 66 input processing channels.
What sets the Si Expression 1 apart is its user-focused design, with the 1 Control = 1 Function interface ensuring that every knob and fader is dedicated to a single task. This simplicity brings clarity and efficiency to your workflow. The mixer also integrates four stereo Lexicon FX processors, offering a rich palette of sounds without compromising other processing capabilities. With versatile bussing options, including 14 aux/group mixes and 4 matrix mixes, you can configure your setup to suit any audio environment.
Output connectivity is extensive, featuring 16 balanced line outs, AES out, and a headphone monitor out. The mixer also supports various option cards, such as AES, FireWire/USB/ADAT, and Dante, ensuring seamless integration with other systems.
Key Features:
- 16 recallable mic preamps with 4 line inputs and 4 internal stereo FX returns
- 64 x 64 expansion slot for up to 66 input processing channels
- 1 Control = 1 Function interface for intuitive operation
- Four stereo Lexicon FX processors with adjustable parameters
- Versatile bussing with 14 aux/group mixes and 4 matrix mixes
- Comprehensive output connectivity including 16 balanced line outs and AES out
- Compatible with various option cards for expanded integration options
Product specs
| Type | Digital |
| Channels | 16 |
| Inputs - Mic Preamps | 16 x XLR |
| Phantom Power | 16 Channels |
| Inputs - Line | 4 x TRS |
| Outputs - Main | 2 x XLR |
| Outputs - Other | 16 x XLR |
| Inputs - Digital | 1 x Stereo AES/EBU (XLR) |
| Outputs - Digital | 1 x Stereo AES/EBU (XLR) |
| Aux Sends | 20 x Aux Sends |
| Busses/Groups | 4 x Bus |
| Data I/O | Harman HiQnet |
| Computer Connectivity | Via Optional Firewire/USB/ADAT Card |
| I/O Expansion Slots | Yes |
| Faders | 16 x 100mm |
| EQ Bands | 4-band |
| Rackmountable | Yes |
| Height | 6.7" |
| Depth | 20.5" |
| Width | 19" |
| Weight | 24.2 lbs. |
FAQs
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What are the key features of the Soundcraft Si Expression 1 16-Channel Digital Mixer?
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The Soundcraft Si Expression 1 offers 16 mono mic inputs, a color touchscreen interface, 66 channels to mix, and 4 Lexicon effects engines. It also includes 20 aux busses, 8 matrix busses, and Soundcraft FaderGlow for intuitive control.
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Is the Soundcraft Si Expression 1 suitable for live performances?
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Yes, the Soundcraft Si Expression 1 is well-suited for live performances with its 16 mic preamps, 20 aux sends, and 4 stereo Lexicon effects engines, providing versatility and high-quality sound management.
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Does the Soundcraft Si Expression 1 support digital connectivity?
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The mixer features AES/EBU digital inputs and outputs and offers expansion through an optional Firewire/USB/ADAT card, allowing for flexible digital integration.
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How does the Soundcraft FaderGlow feature enhance mixing on the Si Expression 1?
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Soundcraft FaderGlow provides visual feedback by illuminating faders in different colors, making it easy to identify fader functions and levels quickly, enhancing workflow efficiency during mixing.
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Can the Soundcraft Si Expression 1 be integrated into a rack setup?
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Yes, the Soundcraft Si Expression 1 is rackmountable, making it convenient for studio or live sound environments that require space-saving solutions.
Videos
GLB Productions
Soundcraft Si Expression 1 mixer training part one
Soundcraft Si Expression 1 mixer training part one
GLB Productions
Reviews
PROS
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Intuitive color-coded interface simplifies navigation and workflow.
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Solid metal construction ensures durability and longevity.
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Comprehensive built-in effects, including four Lexicon FX units.
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Ability to control via iPad offers convenient remote mixing.
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Detailed four-band EQ and dynamic processing on each input channel.
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Excellent sound quality praised by experienced audio engineers.
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Dual patching allows for seamless instrument transitions during performances.
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Versatile routing options cater to complex audio setups.
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32 in/32 out capability with MADI-USB card for studio and live use.
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High-quality preamps and dynamic processing enhance audio clarity.
CONS
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Limited functionality of the iPad app compared to other models.
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Visibility issues with display and button lights in bright sunlight.
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Requires switching layers for full access to all channels.
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No pad on inputs; can be limiting in certain setups.
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Initial setup and routing can be complex for new users.
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Software updates and support have been inconsistent post-Harman acquisition.
Owner Insights
We analyzed real musician discussions from forums and Reddit to find what players love, question, and tweak about Soundcraft Si Expression 1 16-Channel Digital Mixer.
Setup and maintenance
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Factory resetting the mixer can resolve numerous operational issues, such as scene loading errors and broken USB inputs.
Source
User experience
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Some owners note the Si Expression allows for faster mix setups, achieving a satisfactory mix within one song, while the Qu16 requires multiple adjustments.
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The Si Expression's EQs are perceived as more responsive, facilitating quicker mix adjustments compared to the Qu16.
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Users report a "gloves on" feeling with Si Expression's controls, indicating a lack of precision due to the interface design.
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The Soundcraft Si Expression 1 is criticized for having knobs made from thin plastic, reducing durability and increasing the risk of breakage.
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Users find the touchscreen small and the channel strip highlight colors easily washed out by ambient light, hindering usability in certain environments.
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Comparisons
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The Si Expression is often favored for its preamp quality over the Qu16, with users noting a richer sound profile.
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The Lexicon effects on the Si Expression are highlighted for their superior quality compared to the effects on the Qu16.
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The Soundcraft Si Expression 1 is considered more challenging to use without external control, with some preferring the flexibility of the Behringer Wing for 48-channel options.
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Compared to the Behringer X32, the Si Expression 1 is perceived as less user-friendly, lacking features like scribble strips and having a more cumbersome UI.
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Features and functionality
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The Fader Glow on the Si Expression aids in keeping track of mixing tasks directly on the surface, enhancing usability.
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The Si Expression 1 lacks DCAs, forcing users to use mix buses routed to the LR instead, complicating mix setups.
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Users report the lack of a built-in RTA as a notable omission, considering it a basic feature in modern digital consoles.
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Some users experience random channel lock-ups, preventing sound routing to FOH, disrupting performances until a restart is performed.
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Build quality
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Some users dislike the fader feel and find controls overly stepped, affecting tactile interaction during use.
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Use cases and applications
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It's noted that the Si Expression 1 is straightforward for teaching routing and direct outs to students, despite its limitations.
Source
Critic Reviews
Based on 0 Reviews and 0 Ratings
Genre Usage
Based on how artists on Equipboard use this gear, it is most commonly found in the following genres.
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