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SSL Saturator: Choosing Your Harmonics for Clean, Musical Saturation

  • Writer: Leiam Sullivan
    Leiam Sullivan
  • Mar 5, 2025
  • 3 min read

Updated: Jul 24

SSL Saturator

Most saturators add harmonics.


The SSL Saturator lets you choose which harmonics to add.


That's what makes it different.


Most saturation plugins ask one simple question:


How much saturation do you want?


SSL asks another.


What kind of saturation do you want?


That extra level of control is why I keep coming back to it.


Rather than simply adding colour, it lets you shape the harmonic character of a sound.


If you've already read my article on audio saturation, you'll know that saturation isn't just about distortion.


It's about adding harmonics, increasing density and making sounds feel richer without simply turning them up.


SSL Saturator takes that idea a step further by letting you decide which harmonics become part of the sound.



Harmonics Are the Character


Not all harmonics sound the same.


Some feel smooth.


Some feel aggressive.


Some add warmth.


Others add bite.


That's exactly what the SSL Saturator gives you control over.


Instead of applying a fixed flavour of saturation, you can shape the harmonic balance to suit the source you're working on.


For me, that's what makes it stand out.



The Controls That Matter


Drive


Drive determines how hard the signal is pushed into saturation.


A little adds subtle richness.


More drive creates stronger harmonic content and a more obvious character.


I rarely push this very far.


The SSL Saturator sounds best when it's doing just enough to make you miss it when it's bypassed.


Harmonics


This is the feature that makes SSL Saturator special.

You can emphasise:


Even (2nd-order) harmonics


These create a smoother, more valve-like warmth.


They're excellent for vocals, pads and anything that needs a little more body without becoming harsh.


Odd (3rd-order) harmonics


These introduce a slightly more aggressive character.


They work particularly well on drums, percussion and synths where you want extra edge and definition.


Rather than reaching for a different saturator, you can shape the harmonic character from within a single plugin.


Depth & Shape


These controls determine how those harmonics are introduced into the signal.


They're less about adding more saturation and more about refining its behaviour.


Small adjustments can make a surprisingly noticeable difference.


Boost


Boost adds additional headroom, allowing you to push the Drive control further without immediately clipping the output.


That makes it much easier to judge the saturation itself rather than simply hearing a louder signal.


Mix


One of my favourite controls.


Parallel saturation is often where the magic happens.


Instead of committing fully to the processed sound, you can blend just enough harmonic content underneath the original signal.


The result is often fuller, denser audio without sounding obviously processed.



How I Use SSL Saturator


Vocals


Vocals usually receive gentle amounts of even harmonics.


I'm not trying to make them sound distorted.


I'm trying to make them feel more solid.


A small amount of Drive combined with around 30–40% Mix often gives vocals a little more body while preserving their clarity.


Drums


Drums benefit from odd harmonics.


Kick drums gain weight.


Snares become more defined.


The trick is restraint.


Too much saturation quickly softens the transient that gives drums their impact.


Synths


Digital synths can sometimes feel a little too perfect.


A touch of SSL Saturator helps introduce the small imperfections that make analogue equipment feel alive.


Pads become warmer.


Leads become more confident.


Bass sounds gain extra presence without relying on EQ alone.


Master Bus


Very occasionally I'll use SSL Saturator across the stereo bus.


Not to hear saturation.


To miss it when it's gone.


A very low Drive setting, careful level matching and a restrained Mix control can gently increase density and cohesion across the whole mix.


If you can clearly hear it, you've probably gone too far.



Why I Keep Coming Back to It


There are countless excellent saturation plugins available.


Some emulate tape.


Some emulate valves.


Some recreate famous consoles.


SSL Saturator occupies a slightly different space.


It doesn't just give you more saturation.


It gives you more control over the harmonics you're creating.


That makes it less about adding colour for the sake of it, and more about choosing the right harmonic character for the sound in front of you.


For me, that's what makes the SSL Saturator such a valuable mixing tool.




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