Faraday Limiter

Peak limiter w/ a powerful magnetic field

Most modern digital limiters are designed to be sonically neutral, with maximum transparency and minimal coloration. In other words, they’re created to do one job (to limit a signal’s level) without changing the overall sound too much or imparting any specific sonic signature. Inevitably, though, digital peak limiters do have a sound of their own — especially when pushed hard — and, when exposed, that sound can be truly awful: harsh, brittle high end; squashed transients; & thin or mangled low end. Rather than build another “transparent” brickwall limiter, we thought we’d make something different: something dynamic, colorful, and inspiring; something you could use for more than just pure loudness.

Named after the inventor of the electrical transformer, Faraday Limiter’s analog-modeled input/output transformers are responsible for its beefy, harmonically-rich sound. The limiter circuit is smooth yet lively — it can pump faster and further than any limiter we’ve ever heard while retaining its characteristic punch and warmth. Faraday Limiter sounds great on buses, individual instruments, vocals, dialog, etc. and allows for a level of timbral shaping and tonal coloration that can’t be achieved with any other dynamics processor.

Interface Preview

Here’s a screenshot of Faraday Limiter in action. Click anywhere on the interface to jump to a control’s definition below.

Advanced Controls


Primary Controls


Controls the point at which limiting and more pronounced saturation will occur (the saturation intensity depends on the Color setting).

Threshold includes a level meter embedded in the slider. This meter shows the peak level of the input signal before Faraday Limiter’s processing, which can be helpful when choosing a threshold.

If the signal peak exceeds or equals 0.0dB the meter color turns red, indicating that clipping could occur. Faraday Limiter will never clip internally, due to its double-precision floating-point processing, but the signal might be clipped at a later stage (by the host/DAW or DAC).

Threshold also has a triangular indicator floating to the left of the slider. This shows the threshold value where compression would begin, based on the peaks of the detector signal. When Threshold is set below these peaks, the triangle will disappear. If you see the triangle, no compression is occurring.

  • Min -36.0dB
  • Max 0.0dB
  • Default 0.0dB

Top Bar Readout

Top Bar Readout switches Faraday Limiter’s numeric readout mode in the top bar.

Option About
Max GR

Max Gain Reduction


Long Term LUFS

Loudness Range

Loudness Range

  • Default Max GR


Controls the ratio of Faraday Limiter’s gain reduction.

The ratio changes the severity of the gain reduction. For example, a ratio of 8:1 means that for every 8 dB the input signal is above the Threshold, the output signal will only increase by 1 dB.

  • Min 2:1
  • Max 20:1
  • Default 20:1



Controls the amount of analog coloration and transformer saturation.

At 0%, Faraday Limiter is rather clean sounding. 100% is a nice analog middle-ground, and 200% gives you fully-saturated transformer growl.

The perceived analog coloration is greatly influenced by the Threshold. As the threshold decreases, the Color character becomes more tape-like, with increasingly pronounced odd-order harmonics.

  • Min 0%
  • Max 200%
  • Default 100%


Alters the frequency-dependant characteristics of the limiter’s detector circuit.

A big part of Faraday Limiter’s thick, punchy sound is its frequency-dependent gain reduction. Low and high frequency sounds hit the limiter differently, and — depending on the Warmth setting — will exhibit different attack/release characteristics. High values, such as 100%, generally sound thicker and punchier, while low values, like -100%, have a quick, bright limiter sound.

For example, you can often use the warmth control to emphasize different aspects of a snare drum: more Warmth gives more thud & low end; less Warmth gives more stick & snare presence.

The Warmth control is not EQ, and will not change the frequency response of the plugin.

  • Min -100%
  • Max 100%
  • Default 0%


Attack Time Constant

Modifies the speed of the limiter’s attack.

This control is unitless (i.e. not specified in seconds or milliseconds) because Faraday Limiter does not have a traditional fixed attack time. Smaller Attack Time Constant’s will clamp down quickly, dampen transients. Larger Attack Time Constant’s cause the limiter to react more slowly, emphasizing the attack and punch of the incoming signal.

  • Min 0.1x
  • Max 8.0x
  • Default 1.0x

Release Time Constant

Modifies the speed of the limiter’s release.

Like the Attack Time Constant, this control is unitless (i.e. not specified in seconds or milliseconds). Smaller Release Time Constant’s cause the limiter to release more quickly, often sounding louder and causing more audible pumping. Larger Release Time Constant’s cause the limiter to release more slowly and smoothly.

  • Min 0.1x
  • Max 8.0x
  • Default 1.0x


Output Gain

Varies the output gain.

Output Gain includes a level meter embedded in the slider. This meter shows the peak level of the signal both pre (lighter color) and post (darker color) Faraday Limiter’s processing.

Output Gain also has a triangular indicator floating to the right side of the slider. This triangle’s location is based on the peaks of the input and output signals, and indicates approximately where Output Gain would need to be set in order to match the input and output volume.

  • Min -36.0dB
  • Max 18.0dB
  • Default 0.0dB

Auto Gain

Sets the reference peak level used by the auto gain algorithm.

Faraday Limiter’s automatic gain compensation attempts to automatically make up for the gain lost during compression & limiting so that the output volume remains approximately constant for different Threshold and Ratio settings.

It works best when the Auto Gain setting matches the peak level hitting the sidechain. For example, if your detector signal consistently peaks at -6.0dB, set Auto Gain to -6.0dB.

The maximum gain compensation is applied when Auto Gain is set to 0.0 dB. At -20.0dB, Auto Gain is turned off completely.

The automatic gain compensation in Faraday Limiter is not based on the input (or sidechain) signal. Instead, a combination of the settings of the Threshold, Ratio, and Auto Gain determine the amount of gain compensation.

  • Min -20.0dB
  • Max 0.0dB
  • Default 0.0dB

Master Mix

Overall Faraday Limiter mix. 0% is all dry signal and 100% is all Faraday Limiter.

Setting Master Mix anywhere between 0% and 100% layers dry and compressed signal — an easy way to do parallel compression.

  • Min 0%
  • Max 100%
  • Default 100%

Master On/Off

Bypasses Faraday Limiter’s processing.

We recommend using the Master On/Off instead of your DAW’s plugin bypass to avoid digital artifacts.

  • Default On

Advanced Controls

The Advanced section offers more precise control and fine adjustment options.

To access Faraday Limiter’s advanced controls, click the ••• icon in the sidebar.


Sidechain Listen

Listen to the detector signal instead of the output of Faraday Limiter.

This is what Faraday Limiter is “listening” to when detecting threshold crossings.

  • Default Off

Sidechain Source

Select the source of the detector signal(sidechain), which Faraday Limiter uses when detecting threshold crossings.

Option Discussion

Signal being limited also used as the detector signal


Threshold detection based on different audio than the signal being compressed

To route audio to Faraday Limiter’s external input, use the host/DAW’s built-in sidechain selection method.

  • Default Internal

Sidechain Trim

Adjust the level of the detector signal before threshold detection occurs.

  • Min -36.0dB
  • Max 24.0dB
  • Default 0.0dB

Sidechain HPF

Sidechain HPF controls a high pass filter (HPF) for the limiter’s detector signal only.

The Sidechain HPF is useful for controlling how the limiter reacts to low end and bass frequencies. At higher frequencies, like 250Hz, more low end will be removed from the sidechain signal, which in turn means the that the low end will undergo less limiting/compression.

This can be useful if you want to allow the low end to “breathe” or if you want to avoid triggering the limiter with a bass instrument (kick drum, bass synth/guitar, etc). Conversely, if you want the limiter to pump with a kick drum or low end instrument, leave the Sidechain HPF at 20Hz.

  • Min 20Hz
  • Max 250Hz
  • Default 20Hz

Reset Meters

Resets the meter processing. This resets all the metering values across the plugin.

Options: Off, On

  • Default Off

HQ Mode

HQ Mode is our no-holds-barred processing mode where super high quality audio is given priority over CPU usage.

When HQ Mode is turned On, Faraday Limiter uses a higher precision algorithm, providing better spectral resolution at the expense of some added latency (~50 ms) and higher CPU usage.

We recommend using HQ Mode when you need the highest possible quality and don’t mind 2-4x higher CPU usage. An important lead instrument, vocal, or a mastering session is a great place for HQ Mode.

HQ Mode will require more CPU resources and result in a slightly higher processing delay (latency). To ensure proper delay compensation in your host/DAW, automating HQ Mode is not recommended.

  • Default Off


Supported Channel Configurations

Input Channel # Output Channel #
1 1
1 2
2 2


Annlie Huang / Chris Conover / Diana Zheng / Jack Stratton / James Clerk Maxwell / Joseph Henry / Michael Faraday / TaeHo Park / Tyler Duncan


Devin Kerr / Rob Stenson / Jasper Duba / Noah Dayan


TaeHo Park / Tiago Frúgoli / Gustavo Guzmán / Reda Kermach / Noah Dayan / Gal Cohen / Sydney Bolton / Enrico Cirene

About Goodhertz Plugins

User Interface

Goodhertz plugins are made to be workhorse tools that sound amazing. We’ve put a lot of thought and care into the audio quality and plugin usability, and for that reason, we’ve opted for simple and direct controls & interfaces that don’t rely on photorealistic knobs or ornamental screw heads to communicate their meaning.

We’ve also decided to only include meters and graphs when we feel they will directly lead to a better sonic result. Meters/graphs can consume significant CPU resources, and we firmly believe that if it sounds good, it is good.

Our meters can be reset at any time using the “Reset Meters” button (in certain plugins) and manually enabled or disabled via the “Enable Metering” User Preference.

Preset Bar

Button Action
Undo the last parameter change.
Redo the last parameter change.
Switch to the previous preset.
“Preset Name” Opens the preset drawer (Option/Alt + Click to reset all plugin settings to preset).
Switch to the next preset.
Selects the A settings state.
This copies the current settings to the opposite A/B state; i.e. if you’re on the A state, clicking the arrow will copy those settings to the B state.
Selects the B settings state.


Introduced in version 3.10, the toolbar at the bottom of the plugin holds a handful of shortcut buttons.

Icon Action
Opens preferences menu
Shows diagnostic information
Opens plugin manual in your default web browser
Opens a URL representation of the current plugin control state (Command/Ctrl + Click to copy the URL to the clipboard)
Opens language-selection menu
Shrink interface
Enlarge interface

Keyboard Shortcuts

Action Keyboard Shortcut
Enter New Parameter Value Once you’ve tapped or double-tapped a control, type in a value, then hit Enter, Return, or Tab
Increment Parameter Value or arrow keys
Decrement Parameter Value or arrow keys
Jump to Next Parameter Tab
Jump to Previous Parameter Shift + Tab or ` (backtick)
Escape Parameter Focus / Close any Open Drawers Esc
Tap Tempo t (N.B. For this to work, you must have a BPM control selected.)
Save Preset n (N.B. For this to work, the preset panel must be open.)
Set Preset as Favorite f (N.B. For this to work, the preset panel must be open.)
Edit Preset e (N.B. For this to work, the preset panel must be open.)
Update Preset u (N.B. For this to work, the preset panel must be open.)
Delete Preset Delete (N.B. For this to work, the preset panel must be open.)

Right-Click Actions

Action Instruction
Read about Control in manual Right-Click & select “Show in Plugin Manual”
Reset Control to Default Right-Click & select “Reset to Factory Default Value”
Lock Control when switching presets Right-Click & select “Lock When Switching Presets”
Copy current plugin settings to clipboard Right-Click & select “Copy as URL to Clipboard”
Paste all plugin settings from clipboard Right-Click & select “Paste From Clipboard”
Reset all plugin settings to Defaults Right-Click & select “Reset to Factory Defaults”
Reset all plugin metering Right-Click & select “Reset Meters” (only available in certain plugins)
Reset all plugin settings to Preset Right-Click & select “Reset to [preset] Preset”
Update Preset with current plugin settings Right-Click & select “Update [preset] Preset”
Create new Preset with current plugin settings Right-Click & select “Create New Preset”
Go to the plugin’s manual page Right-Click & select “Read [plugin name] Manual”

Right-Click Preferences

Action Explanation
Language Switch the display language of text elements in Goodhertz plugins. We currently support the following languages: English, Spanish, Portuguese, French, Italian, Japanese, Korean, Chinese (Simplified), Chinese (Traditional), and Arabic.
Always Open Advanced Pane By default, this is Off — i.e. when the plugins open, they do not show you the advanced controls available by hitting the ••• button in the sidebar. If you’d like to always see the advanced controls, enable this preference.
Control Granularity By default, all Goodhertz controls move in small increments when dragged. If you prefer controls to operate with larger increments by default, change this option to Coarse. N.B. This will swap the behavior of the Shift mouse modifier - i.e. Shift-dragging will move a control with standard granularity when set to Coarse.
Dark Mode Allows you to choose the color palette used for displaying the interface. If you prefer the look of dark colors (or work in a darker environment) enable this option. The Auto option will automatically adjust the color scheme depending on the system preferences of your machine (Mac only).
Enable Hover Markers By default, this is On — i.e. all controls will show markers on hover. If you find this behavior unnecessary, deselect this option and no markers will be shown.
Enable Metering By default, this is On — i.e. in normal operation, all audio meters and visualizations available in Goodhertz plugins are enabled and running. If you’d like to turn them off and disable all metering and visualization, deselect this option. And to turn them back on, simply reselect it. N.B. If you’re struggling to use a large number of Goodhertz plugins on an older processor with an integrated GPU, sometimes disabling metering can help.
Enable Scroll Input By default, all Goodhertz sliders can be scrolled in addition to dragged. If you find this behavior unnecessary, deselect this option and no scrolling events will be used to control Goodhertz sliders.
Enable Tooltips By default, this is On — i.e. all controls will show a tooltip on hover. If you find this behavior unnecessary, deselect this option and no tooltips will be shown.
GPU Acceleration By default, this is Enabled — i.e. the GPU will be prioritized whenever possible to improve graphics performance. If your graphics card does not support GPU acceleration, this preference will be automatically set to Reduced. N.B. If you experience graphics issues, disabling this preference may help.
Keyboard Focus By default, you can get keyboard focus on any Goodhertz control with a single click. Change this option to ensure keyboard focus only occurs on double clicks.
Window Size Enlarge or shrink the Goodhertz plugin window by selecting an option here. This will save your preference for all instances of this plugin.
Diagnostics Displays general information about the plugin and the configuration of your system for diagnostic purposes. If you experience any issues with the plugin, it can be helpful to include this information when contacting us. N.B. Clicking this window will copy the contents to the clipboard.

Mouse Modifiers

Action Combination (Mac) Combination (Windows)
Reset Parameter to Default Value Option + Click Alt + Click
Move Control with Coarse Precision Shift + Drag Shift + Drag
Move Control with Fine Precision Command + Drag Ctrl + Drag
Move Control with Normal Precision Drag Drag


Unintentional digital clicks and pops are the worst. They happen for lots of reasons and often end up wasting your time with needless revisions or mastering surgery. When they go unnoticed, they can make their way onto commercial albums and releases.

Plugin automation is a common cause of clicks and pops. Sweeping an EQ band, changing a delay setting, and even automating a plugin bypass can cause digital artifacts if poorly handled.

This is not true for Goodhertz plugins. Any parameter in a Goodhertz plugin, even on/off switches, can be automated freely and smoothly without clicks, pops, or zipper noises (unless otherwise noted). You can push them, pull them, LFO them — whatever you do, they’ll handle it gracefully.

Since our Master On/Off controls won’t create artifacts, we recommend that you use them rather than your DAW-supplied plugin bypass if you want to disable plugin processing.

Plugin Settings

Goodhertz plugin settings can be copied and pasted as text urls, which look like this: https://goodhertz.com/vulf-comp/3.0.9?cm=0&wf=0&lf=100&lfc=50

To copy and paste, right click anywhere on the plugin interface and select either the copy or the paste option.

E.g. If you paste “https://goodhertz.com/vulf-comp/3.0.9?cm=0&wf=0&lf=100&lfc=50” into Vulf Compressor it will recall the settings associated with that url. This way you can easily send an exact plugin setting to someone — in an email or even a tweet — without any guesswork or screenshots.”

System Requirements

Mac OS X ≥ 10.13

Audio Unit 64-Bit, VST 64-Bit, VST3 64-Bit, or AAX 64-Bit host

Windows ≥ 10

VST 64-Bit, VST3 64-Bit, or AAX 64-Bit host

Contact Support

To send plugin feedback, please e-mail us at feedback@goodhertz.com.

If you have a quick question, send us a tweet @Goodhertz. We’re often able to respond faster to tweets than emails.

If you’re having trouble, experiencing a technical issue, or you think you’ve found a bug, please email support@goodhertz.com.

Find all our contact info & bug-reporting protocol on the contact page.