Soundcraft Si Expression 1 Digital Mixer

16-channel Digital Mixer with 16 Mic Pres, 66 Input Processing Channels, Automation, Lexicon Hardware-based Effects, And Expansion Slot
Soundcraft Si Expression 1 Digital Mixer image 1
Soundcraft Si Expression 1 Digital Mixer image 1
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Soundcraft Si Expression 1 Digital Mixer
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A Powerful and Affordable Digital Mixer

The Soundcraft Si Expression 1 16-channel digital mixer leverages cutting-edge DSP, component technology, and manufacturing techniques to deliver awesome mixing power in a compact, amazingly affordable rackmount package. The Si Expression 1 gives you 16 recallable mic preamps, four line inputs, four internal stereo FX returns, and AES in. A 64 x 64 expansion slot lets you deploy up to 66 input processing channels. Each sports a highpass filter, input delay, gate, compressor, and 4-band EQ. Robust automation and connectivity are the icing on the cake. Take your mixing to the next level, with Soundcraft's Si Expression 1.

Soundcraft Si Expression 1 16-channel Digital Mixer at a Glance:
  • Amazing flexibility
  • Onboard Lexicon FX processors
  • Say goodbye to digital mixer confusion
  • It's a Soundcraft
Amazing flexibility

If you think the Soundcraft Si Expression 1's input side is impressive, you should know that all Si Expression boards also sport versatile bussing, output processing, and connectivity. You can configure the 14 aux/group mixes as 14 mono mixes, eight mono plus six stereo mixes or just about anything in between. The four matrix mixes can be mono or stereo as required. You also get four more mix busses dedicated to the internal Lexicon FX processors, in addition to the left, right, and center busses. Each bus mix features always-available compression, 4-band EQ, BSS graphic EQ, and delay. Comprehensive output connectivity includes 16 balanced line outs, a headphone out, AES out, and the 64 x 64 option slot.

Onboard Lexicon FX processors

Soundcraft Si Expression consoles incorporate four stereo Lexicon FX processors based on the acclaimed MX400. With fully adjustable parameters and dedicated tap-tempo keys, you can tweak to your heart's content. These FX are hardware-based, so even if you're using a ton of them it doesn't affect your other processing in the slightest. All of your dynamics, EQ, filters, delays, and GEQs will always be available, no questions asked.

Say goodbye to digital mixer confusion

Soundcraft's Si Expression mixers feature a 1 Control = 1 Function interface, with each control dedicated to a single function. No confusing control layering or endless menu purgatory navigation. This approach allows the Si Expression controls to be labelled on the surface just as they would be on an analog desk. Ah, productivity — how refreshing!

It's a Soundcraft

As befitting any Soundcraft digital mixer, Si Expression boards give you extensive facilities and legendary audio quality, courtesy of the cutting-edge EMMA DSP processor, which is the same DSP platform that has helped rocket previous Soundcraft Si series consoles to stardom. With prodigious processing power, bulletproof reliability, impressive flexibility, amazing ease of use, and a surprisingly friendly price tag, Si Expression mixers are an outstanding value. Exactly what you'd expect from Soundcraft.

Soundcraft Si Expression 1 16-channel Digital Mixer Features:
  • 16 mono mic inputs; 4 line inputs; AES in and out
  • Color touchscreen interface
  • Up to 66 input processing channels
  • Pre/Post selection per input, per bus
  • Global mode encoders; GEQ on every bus
  • Motorized 100mm faders with FaderGlow (illuminates fader slots according to function)
  • LR and C Mix busses; 4 FX busses; 8 Matrix busses; 20 sub-group / aux busses
  • 4 Stereo Lexicon effects engines
  • Delay on inputs and outputs; freely assignable insert loops
  • Comprehensive automation with four mute groups
  • Harman HiQnet integration; 64 x 64 channel option card slot
  • Option cards include AES, FireWire/USB/ADAT, AVIOM, CobraNet, BSS BLU Link, Dante, optical MADI
Take your mixing to the next level, with Soundcraft's Si Expression 1!

Additional Media

Live Mixer Buying Guide

Tech Specs

Type Digital
Channels 16
Inputs - Mic Preamps 16 x XLR
Inputs - Line 4 x TRS
Inputs - Digital 1 x Stereo AES/EBU (XLR)
Outputs - Digital 1 x Stereo AES/EBU (XLR)
Outputs - Main 2 x XLR
Outputs - Direct 16 x 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.
Manufacturer Part Number 5035677

Customer Reviews

Based on 7 reviews
Write your review

Great Mixer! Will never go back to analog!

Great mixer! Soundcraft nailed it for those who aren't really up to par with digital mixer interfaces.The amount of equipment you would need in the room with an analog board to emulate the built-in functions are staggering when you consider gates, compressors, eqs, four FX units, etc..The unit is well made - the entire unit is made of that precious stuff called "metal" - NOT plasticky like some other products.There are only a few suggestions I can make to Soundcraft for future versions...1. Your APP for the iPad is quite limited. Might be because you are using a custom interface. You got it nailed with your interface for the Soundcraft UI devices (which also have internal wireless routers).2. It would have been nice to have several of the inputs to be combo jacks, i.e. 1/4" or XLR, say 6 or so.Yes, you have four 1/4" inputs, and in a way, that actually adds 4 more ( 16 channel has 20 ! ). 3. How you handle FX to the MIX sends is unclear. I found out it was on the B page of the faders, but it should be BLUE faderglow color. It is also not documented anywhere nor is it on any of your videos.Overall, I love it!
Music background: Playing music since 1973

Fantastic Mixer! Realistic price!

Great Mixer! Once you do digital, you never go back to analog again!Note to Michael (previous reviewer). He said you can't send FX to mixes. YES YOU CAN! You select the mix to work with, and select the B page of the faders. The FX are on the very right 4 faders. It's just that they were labeled bad (ST 1 ST 2..). That's how to add FX to the AUX sends.The amount of analog equipment it would require to emulate a digital board like this would be immense! Just the multi-band EQ's available - one for each and every AUX send, etc., would take up several racks in analog. And then there is the gates, compressors, etc.. In short - IT'S WORTH THE MONEY! And to be able to sit at the back of the venue and adjust the sound via an iPad = PRICELESS!
Music background: 42 Years live musician

Amazing Board!! Sound and Workflow!

I've been in the Pro Audio business as an engineer and musician for over 15 years and have gone through many boards in my time and always got the sound I wanted with whatever work it took. I would always get compliments on our sound (I'm always mixing and playing in these bands ). When I finally made the switch to a digital board to get rid of my older analog board with inserts for the 18 space rack of compressors, effects, headphone amps, ect. I looked/listened to all the comparable boards very closely and decided on the Soundcraft as I liked the workflow and they've always made quality products for years, and I'm glad i did. It sounds amazing and I get told that at every show! I'm playing with the band while I'm mixing a bit after I do a soundcheck with my ipad out in the audience. We play Americana, Folk, Bluegrass;3 vocals, Harmonica, 2 - Collins acoustics guitars, Weber mandolin, and electric Fender bass (DIs -Fishmen Platium, Fireeye Red-eye,L.R.Baggs ParaDI, Radial J48, SansAmp BassDriver). We Also switched in instruments such as, banjo, melodica, slide guitar, papoose. Being able to double patch inputs while maintaining different settings is great for some instruments that I can just plugin and switch channels so the EQ, Compressor setting are properly set for that instrument even though it's on the same input, so great! I've had to do so much less EQing on instruments than in the past, as they just separate in the mix so nicely and the vocals are just crystal clear and warm (I run a mono mix to btw). I do use subgroups and even compressed subgroups, I will say I'm experienced in this area, so I can't say someone new to live sound would easily get the same results as I do because it took years to tune and use my ears properly. I will say though that this board give you many options to grow into and great options to have such as Maxtix mixes, just rececetly did a gig on a boat where they needed a line from me to feed their board speakers throughout the upper and lower deck, took a second and they had the same great mix as the people in front of us and I was able to go downstairs and EQ the Matrix mix to fit the smaller speakers the board had. I also have the Multi-Digital card and that is useful in more ways than just recording and playback. I could go on and on about this board and the features.One negative is that in the sunlight is very hard to see whats lit up and whats not... the buttons and the faderglow, I use an ipad on my mic stand for mixing so most the time I can see from the iPad just fine but when at the board, it'd be a huge problem or at least make thing a lot more challenging.All in all, it's an amazing board for many reasons, but what I love most is the sound and it seems that what most other people like too without even knowing it.
Music background: Over 15 years playing, engineering, recording. Very Experienced.

Great Mixer

This is a great board, easy to navigate with the color glow feature. I have used board for about year now, and very pleased with it. Used in acoustic setting, and recently using in band setting, works great in both.
Music background: Pro Musician

Best Console Ever

I have used Si Expression for over a month.Man!!!The flexibility it offers are just mind blowing.I wouldn't want to even think of any other console.Absolutely Fantastic.
Music background: Live Sound Engineer
See also: Soundcraft, Soundcraft Digital Mixers, Soundcraft Digital Mixers