Solid State Logic Sigma

Remote-controlled Analog Mix Engine for DAW Environments with 16 Channels, 2 Stereo Mix Busses, Direct Outputs, Talkback, and Delta-Control
Solid State Logic Sigma image 1
Solid State Logic Sigma image 1

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Solid State Logic Sigma
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DAW Workflow, SuperAnalogue Sound

The Solid State Logic Sigma Delta gives you the legendary SuperAnalogue sound of an SSL console while working entirely within your DAW environment. Using proprietary MDAC control technology first featured in SSL's Duality and AWS studio consoles, Sigma Delta’s pure analog summing engine may be driven by automation data created within your DAW of choice. Enjoy full synchronized control via the Sigma Remote Control app and Delta-Control DAW plug-ins. The 16 input channels feature front-panel metering and may be individually switched between mono or stereo for up to 32 channels at mixdown. Sigma Delta also gives you flexible monitoring configurations, talkback, MIDI over Ethernet, and more. Get big SSL sound and DAW convenience with SSL's Sigma Delta.


The Delta-Control Single Fader Plug-in is native AAX/RTAS/VST/VST3 compatible and permits Sigma channel volume and mute automation as if it were a DAW plug-in — with 16 instantiations in your DAW session, you'll gain control over all 16 Sigma channels. Your DAW's automation system is used to record and playback Sigma volume control data entered either directly from the plug-in GUI fader, or from an SSL MCU control surface that is controlling Sigma directly. Inserted into a DAW's audio or aux channel, the Delta-Control plug-in sends and receives volume data from Sigma Delta over a high-speed ethernet network connection. DAW track audio passes unprocessed through the plug-in slot, letting you combine the plug-in with other plug-ins. The Sigma volume and mute switches apprar as plug-in parameters in the Delta-Control plug-in GUI, and their automation data is recorded to your selected DAW channel's automation lane. During playback, the plug-in converts stored automation data from the DAW into Delta-Control messages and sends these back to Sigma via the SSL Logictivity network connection.

Solid State Logic Sigma Delta Features:

  • SSL SuperAnalogue mix engine
  • Full synchronized control via Sigma Remote Control app and Delta-Control Single Fader Plug-in
  • 16 flexible channels individually switchable between stereo or mono for up to 32 channels at mixdown
  • 2 stereo mix busses with individual stereo insert points 
  • Independent Main and Alternate Monitor outputs 
  • Direct outputs on all channels 
  • Talkback facility with adjustable Dim level
  • Intuitive cross platform set-up and configuration software 
  • High speed External MIDI control via single Ethernet cable
  • Works with all major DAWs

Tech Specs

Type Analog
Channels 16 in, 2+2 out
Outputs - Main 4 x XLR
Outputs - Direct 16
Busses/Groups 2 stereo mix
Talkback Yes
Computer Connectivity Ethernet/ Wireless
Rackmountable Yes
Manufacturer Part Number 729760X1

Customer Reviews

Based on 3 reviews
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What I've Been Missing!!

This is one of the best purchases I've ever made! The SSL sound is literally what I have been missing and working so hard to attain with in the box mixes for the past few years. I literally feel like someone has removed handcuffs from me when it comes to mixing. Here's the benefits: 1. The SSL sonic signature. It's honestly hard to understand until you run your tracks through this. 2. More punch, more space, more clarity, more depth 3. For the first time ever, I'm able to hear the rhythms the way I want to under dual solos. 4. I can mix a background part lower, and more subtle than I ever have without it disappearing. 5. In a metal mix, where everything has to be the "loudest" at once, I can get leads, rhythms, vocals, and drums to all punch through in a way they just can't digitally. 6. Thinner instrumentation that used to bother me sounding too "empty" now also sounds full. 7. Drums now have a snap to them that can cut through even when lower in the mix. I tried to get this snap via EQ, Transient designer plugs everything, and never got what I wanted. The second I put snare and kick into this unit, I heard it! For those curious - This product is not going to make a bad mix sound good. It's not going to make poorly recorded tracks sing. But it will take a good mix up several notches. It will make you re-eq things. You will hear errors in the music that you couldn't hear mixing ITB. It will remove your limitation and then force you to be better! If you don't have great mics, great amps, great converters, etc. Then this isn't the unit for you (yet). I'm currently running Ensemble FW and Antelope Zen converters to feed this and record the input back in. Also, when you install it on a Mac. Access the unit through the web browser method. THEN download and install the Delta 2.0 update before the Delta 2.1. I went in circles with tech support having difficulty getting the firmware upgrade to take. Gotta do the intermediate for now (as of Mar 2017). I highly recommend this unit. So killer. Can't wait to get a few more records under my belt with this!
Music background: Professional Engineer/Producer/Musician


This is my secret weapon!!!

Can't say enough

Best purchase I've made for mixing. SIgma is awesome. So many features. I use Buss B for parallel drum compression. Smash the heck out of it and mix back into Buss A with perfect phase. Sigma sounds great. Easy to use. Has 16 stereo channels! Love my sigma.
Music background: Production, engineering, Mixing. Dove Nominated.

Sweetwater Advice

Austin Moss

The problem: gain staging in the digital domain to feed an analog summing amplifier results in lower bit depth at the interface's DAC, i.e., lower resolution. The solution: analog attenuation that is automatable and recallable to go into the summing amplifier. The solution shall be a Sigma.
See also: Solid State Logic, Solid State Logic Summing Mixers