Multiband saturation · The flagship v1.10.1

RSL Dual Core Saturator

Two cores. One decision.

Split the signal at a crossover you choose and drive each band through its own saturation core: seven characters, gain match so you judge tone rather than level, and a residual monitor to hear exactly what is added.

Buy for $69 Try free for 30 days

$69 founders’ price through 30 November, then $99. Version 1.10.1.

macOS: Audio Unit, VST3, AAX and Standalone. Windows: VST3 and Standalone. Activates through RSL Hub on up to 4 computers.

Most saturation pushes the whole signal through one circuit, and the low end takes the hit first. This one splits it, gives each side its own, and lets you hear exactly what it adds.

Hear it before and after

Each clip runs dry, then through one factory preset. Both sides are matched in loudness, so what changes is the tone, not the volume. Flip the switch while it plays.

Preset Punch Glue

0:000:11

Drum bus Punch Glue

Before

After

808 Phone Speaker

Before

After

Mix bus Tape Master

Before

After

Master Red Glue

Before

After

From beats produced by Mev. Rendered with the plugin’s own engine, version 1.10.1.

What producers say about it

This plugin is crazy! It gets everything I want loud, and in the best way.

Dawgs DabatoMusic producer and engineer, 20+ years. Credits include Interscope and AMC/ALL BLK

Having precise control over two distinct saturation cores is an absolute game-changer. You get that extra punch and energy without muddying up the low end or killing your mix’s natural dynamics and audio quality.

Oz Vega@oz_prod_it

Already on released records. The RudeboyFinesse albums RUDESUMMER and STILLSUMMER were mastered with this plugin.

Seven circuits. One window.

The window in the middle of the faceplate shows the circuit you have chosen: a valve pair for Tube, a tape transport for Tape, a liquid gain cell for Ionic. The harmonic display beside it shows what that circuit is adding, as it plays.

Gain Match holds the level while you switch, so you hear the character, not the volume. Residual plays only what is being added.

The Tube character window of the RSL Dual Core Saturator, its two valves lit

2Saturation cores, driven independently

7Characters, from Warm to VO2

8×Oversampling, or off, 2× and 4×

50New presets, voiced on real drums, bass, 808s and mixes

Seven characters

Drive sets how hard the circuit works. Depth changes how far it is allowed to go, so what it does depends on the character. How each one works

Symmetric, odd-weighted
Warm

For cohesion rather than an effect anyone can name.

Best for Bus glue, vocals, broad cohesion
Asymmetric valve
Tube

Even-order color that gets less clinical the harder you push it.

Best for Vocals, bass, drums and buses
Rounded to hard
Clip

Drive walks the signal up to the edge. Depth decides how firm that edge is.

Best for Peak shape, aggressive drums, loudness
Magnetic transport
Tape

Stable tape, not damaged lo-fi tape, at 30 or 60 IPS.

Best for Density and glue with movement
Living ferrofluid core
Ferro

Sustained sound changes what the next transient runs into.

Best for Weight with movement, low-mid character
Liquid gain cell
Ionic

Not a waveform shaper. It moves level, then blends the difference.

Best for Density and control without obvious distortion
Phase-transition distortion
VO2

For when the record wants something broken on purpose.

Best for Aggressive color and deliberate instability

The signal, left to right

One crossover, two saturation cores, and one output stage they share. Scroll and each section lights up in turn.

Stage 1
Input

Input gain sets how hard the signal arrives. Its LEDs light out from 0 dB and its cap glows with the level. Auto Gain turns Output the other way as you turn Input, so pushing the input never just makes it louder.
Stage 2
Core 1, before the split

A restrained Warm stage divides the spectrum at one crossover. Place it on the analyzer, then give the low and high regions their own amount with Low and High, so the bottom stays composed while the top is pushed.
Stage 3
Character

Core 2 is the parallel engine. Pick one of seven characters, and the window shows the circuit you chose. The two blue handles on the analyzer set the band it works on, and anything outside that band is left alone.
Stage 4
Dual core signal flow

Core 2 adds the difference, never a redrawn copy: it isolates the band, processes it, subtracts the original and blends what is left. Wet sets how much joins your dry signal; Depth, Density and Drive shape what the character does.
Stage 5
Tone

Tilt trades body against air. Focus moves the effect between mid and side. Console switches in the console treatment on the way out.
Stage 6
Output

The Blue and Red transformers voice the output stage, Voltage adds left and right drift, and Ceiling holds true peak where you set it. Gain Match and Residual let you judge the tone at the same level, or hear only what is being added.

50 new presets, voiced on real sources

Voiced through the engine itself on real drums, bass, 808s and mixes, and level-matched so a preset changes the tone, not the volume. Mastering presets hold true peak under −1 dBTP; Experimental ones are extreme on purpose. Every earlier preset is still there, in the General, Ferro, Ionic, VO2 and Tape folders.

Drums
Preset	What it does
Punch Glue	Warm glue for a drum bus: density and cohesion without moving the balance.
Snare Crack	Clip core on the upper mids: crack and presence on snares and claps.
Kick Weight	Ferro iron on the low end: weight and chest on kicks, top left alone.
Tape Kit	Tape on the whole kit: rounded transients, a little head bump, softer top.
Ionic Punch	Ionic memory on the drum bus: hits bloom and jump forward, more punch.
Dusty Break	VO2 grit and body on a break: sampled-dust texture.
Red Snap	Warm core into the Red transformer: snap and midrange tone, punch intact.
Hat Silk	Saturation only above about 2.5 kHz: silk and sheen on hats and cymbals.
Tube Bus Warmth	Tube on the drum bus: warm, even-led glue that rounds the hits a little.
Tube Snare Body	Tube above 150 Hz: thicker snare body and ring, attack kept.

Bass
Preset	What it does
Small Speaker	Harmonics in the 200 Hz-3 kHz range so the bass reads on laptops and phones.
Warm Round	Gentle warmth and evenness, no added edge.
Tape Bottom	Tape head bump: fat, even bottom with a softer top.
Growl	Clip core for a forward, growling midrange that cuts through a dense mix.
Ferro Body	Iron saturation in the low mids: body and density.
Blue Sub	Blue transformer: low even harmonics and a whisper of sub under the note.
Tube DI	A tube DI: second-harmonic warmth on the note, nothing fizzy.
Tube Push	A driven tube amp: the bass pushes forward into the midrange.
Tube Round	Tube with the top softened: round, dark and even.
Tube Thick	Tube with density up: a thicker, steadier note, balance intact.

808s
Preset	What it does
Phone Speaker	Upper harmonics so the 808 is heard on phones and laptops, with the sub kept.
Clean Weight	Light warmth and evenness: weight without audible distortion.
Distorted	Hard clipped, distorted 808 for trap and drill.
Tape Boom	Tape boom: head bump, rounded attack, long even tail.
Glide Grit	VO2 grit that shows on glides and slides.
Iron Sub	Ferro density with the sub intact: thick, solid, mids pushed forward.
Blue Weight	Blue transformer: low even harmonics and period-doubled sub, a heavier floor.
Tube Warmth	Tube warmth on the 808: harmonics that carry it, sub untouched.
Tube Bloom	Tube body on the 808: a warmer, rounder low end.
Tube Overdrive	An overdriven tube: thick, rounded distortion that reads on small speakers.

Mastering
Preset	What it does
Transparent Weight	Barely there: a little density, no tonal change.
Tape Master	Half-inch mastering tape: a little low-end bump and a softer top.
Loud Clip	Clip-core harmonics across the mix: denser and more forward ahead of a limiter.
Ionic Lift	Ionic on the mix: a little more transient life and openness, tone intact.
Iron Master	Iron weight on the mix: low-end density and solidity.
Air Sheen	Saturation only above about 3 kHz: top-end sheen and openness.
Red Glue	Warm core into the Red transformer: mix-bus cohesion and a touch of midrange warmth.
Tube Glow	A mastering tube stage: even-harmonic glow, tone intact.
Tube Body	Tube weight in the low mids: a fuller, warmer master.
Tube Silk Top	Tube only above about 3 kHz: silky, smooth top end.

Experimental
Preset	What it does
Octave Ghost	VO2 in the metallic phase: octave-up ghosting from the rectified domains.
Sputter Machine	VO2 in chaos: sputtering and period-doubled subharmonics.
Ferro Collapse	Ferro field pushed until it comes apart.
Swell Memory	Ionic memory at maximum: exaggerated swell and bloom on every hit.
Broken Reel	Tape pushed into its soft ceiling with the rails drifting: a worn, saturated reel.
Wide Burn	Side-heavy clipping with rail drift: a wide, burning stereo field.
Air Shred	Clipping only the top octaves: shredded, fizzy air.
Mid Melt	Clip meltdown confined to 300 Hz-2 kHz, mid channel only, into the Red transformer.
Tube Breath	Tube sag at maximum with drifting rails: the whole signal breathes with the level.
Tube Overload	Tube driven flat out: as thick and saturated as a tube goes, still even-led.

How to get it

Own it, or get every plugin

Own it

RSL Dual Core Saturator

$69once

Founders’ price, then $99. Yours to keep, with its updates.

Buy

30 days free

RSL All Access

This plus 5 more

$15/ mo, billed yearly

Every RSL plugin and every new one, with every update. No card for the trial. Or $18 monthly.

Try All Access free

RSL Complete

All 6, yours to keep

$349once

Founders’ price, then $449. Every current plugin; new ones are not included.

See RSL Complete

Specifications

macOS: macOS 11 or newer. Universal 2, native on Intel and Apple Silicon. Audio Unit, VST3, AAX and Standalone
Windows: Windows 10 64-bit or newer, including Windows 11, on 64-bit Intel or AMD. VST3 and Standalone
Hosts: Any 64-bit host that loads AU or VST3, including Logic Pro, Ableton Live, FL Studio, Reaper, Studio One, Bitwig and Cubase, plus Pro Tools on macOS. Mono or stereo
Not supported: AAX on Windows, VST2, Audio Unit on Windows, and a native Windows-on-ARM build
Oversampling: Off, 2×, 4× or 8×
Presets: 50 voiced presets in Drums, Bass, 808s, Mastering and Experimental, plus the originals in General, Ferro, Ionic, VO2 and Tape
Interface: Fixed 1040 × 680 editor window, comfortable at 1920 × 1080 or HiDPI
Activation: Through RSL Hub with your Renegade Sound Labs account, up to 4 computers. License keys bought before 4 October 2026 keep working, up to 3 devices
Current build: Version 1.10.1 on macOS and Windows
Manual: The user manual, free to read

Questions before you buy

Will it run on my machine?

On macOS it needs 11 or newer, and the build is Universal 2 so it runs natively on Intel and Apple Silicon with no Rosetta translation. On Windows it needs 10 64-bit or newer, including Windows 11, on a 64-bit Intel or AMD machine. There is no native Windows-on-ARM build, and there is nothing else to install: no Visual C++ redistributable is needed.

Which formats do I get?

On macOS, Audio Unit, VST3, AAX for Pro Tools and a Standalone application. On Windows, VST3 and a Standalone application. There is no VST2 build, and Audio Unit is a macOS format only. One purchase covers both platforms.

Does it work in Pro Tools?

Yes, on macOS. The macOS installer includes AAX alongside Audio Unit, VST3 and Standalone, so Pro Tools loads it. AudioSuite is not included, on purpose: Ferro, Ionic and Tape warm up over several seconds, so an offline render of a short selection would not match what the same settings do while playing. The Windows download does not include AAX yet.

Windows says the publisher is not recognized. Is that safe?

Yes, and it is expected. The Windows installer is not code signed yet, so Microsoft Defender SmartScreen warns you the first time you run it. Choose More info, then Run anyway. The macOS build is unaffected.

How many computers can I use it on?

Up to 4, through RSL Hub, our free app: free one up in RSL Hub or under Activated computers on your account page. License keys bought before 4 October 2026 keep their 3-computer limit.

What happens after I buy?

Open RSL Hub, sign in with your Renegade Sound Labs account and choose Install. It activates by itself, with no key to type, and RSL Hub renews the activation in the background. The installers are also kept under Downloads in your account.

I already have a license key. Does it still work?

Yes. License keys keep working. From version 1.9.2 you can also activate by signing in to RSL Hub with your Renegade Sound Labs account, instead of typing the key.

What happens to the price after the offer ends?

It returns to $99. Buying at the founders’ price is a one-time payment, not a subscription.

Is it included in RSL All Access?

Yes. RSL All Access is every RSL plugin, this one included, for $18 a month or $180 a year, with a 30-day free trial and no card needed. Cancel any time. Plugins you buy stay yours.