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An introduction to Solid State Logic SSL DeEss, based on information from the maker and distributors: what it does, how to use it and who it may suit. It is not scored.
Next-generation de-esser, for vocals, instruments and more…
— Solid State Logic official site
What is SSL DeEss?
SSL DeEss is a de-esser from Solid State Logic. It is meant to reduce sibilant 'ess' and 'shh' sounds and harsh upper-mid buildup, and it is presented for instruments as well as vocals.
Its key idea is a relative threshold algorithm. Input level changes earlier in the FX chain are designed not to alter the de-esser's response, and quiet and loud sibilant events are treated alike.
You can mix SPLIT and BROADBAND processing modes and switch filters independently to audition bandpass or shelf behavior. AUTO LISTEN automatically auditions the signal when related controls change.
Presets are provided for Tenor, Alto, and Soprano vocals and for instruments. It is a universal binary with native Apple M1 support.
Relative threshold
The response is designed not to change when input level changes. Takes recorded at different levels may need less re-setting.
Brighten control
A control to restore the high end after de-essing. It can be adjusted if the result feels too dark.
SPLIT and BROADBAND
You can blend band-only reduction with full-range reduction to search for a natural result to suit the source.
Independent filter switching
Filters can be switched independently to audition bandpass and shelf approaches.
Waveform display and AUTO LISTEN
The waveform visualiser shows gain reduction across quiet and loud passages, and AUTO LISTEN helps you audition the target.
Mid/side processing
Processing can target only the mid or side component, which may help when sibilance sits in one part of a stereo source.
Oversampling and lookahead
Optional modes for higher-quality response.
Specifications
| Item | Details |
|---|---|
| Type | De-esser |
| Modes | SPLIT / BROADBAND |
| Native support | Universal binary with Apple M1 support |
| Presets | Tenor / Alto / Soprano / Instruments |
What is included and system requirements
- The plug-in (via SSL Download Manager)
- Vocal and instrument presets
How to use it
- Buy from the SSL store and install with the SSL Download Manager.
- Activate the license (such as through iLok).
- Load it as an insert on a vocal track in your DAW.
- Choose a preset close to the vocal range.
- Use AUTO LISTEN to check which band catches the sibilance.
- Adjust the balance between SPLIT and BROADBAND.
- Restore highs with Brighten if it sounds dark.
- Bypass to compare and make sure it is not overdone.
Vocal sibilance
Possible for taming 's' sounds in singing or narration.
Acoustic guitar and cymbals
May be worth trying on harsh upper mids.
Mix bus
Mid/side processing might help adjust harshness on one side.
Who it may suit
- People tidying vocal sibilance
- People working with takes at varied levels
- People who want a de-esser for instruments too
Good to know before you buy
- The listed price excludes tax.
Price
$99 (Solid State Logic official site, checked 2026-10-27). Prices can vary by region and promotion, so check the official page before buying.
See SSL DeEss on the product page
Sources: store.solidstatelogic.com (checked 2026-10-27)
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