Vulf Compressor

Beastly compression, by Vulf

(dictated via notes app)

It is with great pleasure that I dictate this to you via the notes app on my cellular device please enjoy this plug-in and use it as much is your CPU allows please use it on the master bus try it on individual instruments it’s great on drum brakes and electric bass to add extreme attack please do not treat this like a classic plug-in where they tell you to not use as much bass it save presets save channel strips let this be a part of your mixing thank you.

– Jack Stratton, Vulfpeck

Interface Preview

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

Advanced Controls


Primary Controls

Input Gain

Varies the input gain, pre-compression.

Input Gain includes a level meter embedded in the slider. This meter shows the peak level of the input signal before Vulf Compressor’s processing.

If the signal peak exceeds or equals 0.0dB the meter color turns red, indicating that clipping could occur. Vulf Compressor 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).

  • Min -24.0dB
  • Max 12.0dB
  • Default 0.0dB

Compression Amount

Controls the overall compression amount.

It’s not possible to entirely shut off the compression. Even at 0%, Vulf Compressor still imparts a bit of its signature compressor sound.

If you do want absolutely no compression, use the Master Mix.

  • Min 0%
  • Max 100%
  • Default 50%

Wow/Flutter Amount

Controls the depth of the vinyl wow & flutter.

Wow/Flutter Mix, Wow/Flutter Speed, Wow/Flutter Phase are all controllable in the Advanced Wow/Flutter controls.

  • Min 0%
  • Max 100%
  • Default 15%

Lo-Fi Amount

Controls overall fidelity. Higher Lo-Fi Amount produces more total harmonic distortion, decreased high frequency resolution, and more noise.

More precise control for the distortion (Lo-Fi Crunch), noise (Lo-Fi Noise Gain), & overall lo-fi flavor (Lo-Fi Type) are available in the Advanced Noise section.

  • Min 0%
  • Max 100%
  • Default 50%

Output Gain

Varies the output gain, post-compression.

Output Gain includes a level meter embedded in the slider. This meter shows the peak level of the output signal after Vulf Compressor’s processing.

If the signal peak exceeds or equals 0.0dB the meter color turns red, indicating that clipping could occur. Vulf Compressor 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).

  • Min -24.0dB
  • Max 12.0dB
  • Default 0.0dB

Master Mix

Controls the overall impact of Vulf Compressor. At 0%, the Compression Amount, Wow/Flutter Amount, & Lo-Fi Amount processing are fully bypassed.

The Input Gain & Output Gain are unaffected by the Master Mix setting.

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

Master On/Off

Bypasses Vulf Compressor’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 Vulf Compressor’s advanced controls, click the ••• icon in the sidebar.

Advanced Compression

Comp Attack Time Constant

Modifies the speed of Vulf Compressor’s attack.

This control is unitless (i.e. not specified in seconds or milliseconds) because Vulf Compressor does not have a traditional fixed attack time (it involves a complex interaction of signal dynamics and feedback). Smaller Comp Attack Time Constant’s will clamp down quickly, damping transients. Larger Comp Attack Time Constant’s cause Vulf Compressor to react more slowly, emphasizing the attack and punch of the incoming signal.

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

Comp Release Time Constant

Modifies the speed of Vulf Compressor’s release.

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

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

Advanced Wow & Flutter

Wow/Flutter Mix

Overall wow & flutter mix.

100% is all wow & flutter, no dry signal. 0% is all dry, no wow & flutter.

Intermediate Wow/Flutter Mix settings will produce some nice flanging effects, which can be just the right thing to spice up a vocal or melodic instrument.

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

Wow/Flutter Phase

Controls the stereo phase of the wow & flutter.

produces a monophonic wow & flutter, whereas 180° produces opposite modulation in the left and right channels.

For some subtle stereo widening, try a Wow/Flutter Phase of 180° with a Wow/Flutter Amount around 10%.

  • Min
  • Max 360°
  • Default

Wow/Flutter Speed

Speed of the wow & flutter.

Option Discussion
33.3 RPM

Rotational speed for a standard 12-inch vinyl record

45 RPM

Rotational speed for 7-inch vinyl records

78 RPM

Rotational speed for shellac and 10-inch vinyl

  • Default 33.3 RPM

Advanced LoFi

Lo-Fi Noise Gain

Controls the amount of lo-fi noise.

You can quickly turn toggle the lo-fi noise On or Off by clicking the small sidebar “noise” icon.

  • Min -96.0dB
  • Max 12.0dB
  • Default 0.0dB

Lo-Fi Crunch

Amount of total harmonic distortion from moderate: 0%, to crunchy: 100%.

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

Lo-Fi Type

Selects the flavor of the lo-fi degradation.

Option Discussion

Harmonically rich with just the right amount of dirt

1990's Digital

Bad 1990’s digital converter with moderate aliasing

1980's Digital

Harsh 1980’s digital converter with some nasty aliasing

  • Default Analog


Sidechain Listen

Listen to the detector signal instead of the output of Vulf Compressor. The detector signal is what Vulf Compressor is “listening” to when calculating gain reduction.

Sidechain Listen makes it easy to monitor the detector signal and ensure that the sidechain is correctly routed.

The detector signal will be a blend of the internal and external sidechain inputs, as set by Sidechain External

Sidechain Listen includes a small meter that shows the detector signal.

  • Default Off

Sidechain External

Controls how much of the detector signal is from the external sidechain input.

At 100%, Vulf Compressor’s gain reduction will be based on the external sidechain input only (the typical use of a sidechain).

At 0%, the sidechain is fully internal (normal Vulf Compressor operation). At 50%, the detector signal is an even blend of internal and external sources.

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

In Ableton, sidechaining with a 3rd party plugin like Vulf Compressor is different than with a native Ableton plugin. Here’s an Ableton tutorial with more details.

If you aren’t seeing the option to sidechain with Vulf Compressor, your DAW may not realize that Vulf Compressor now supports an external sidechain. Here’s how to refresh your plugin data in a few popular DAWs:

Vulf Compressor’s makeup gain operates differently for the external sidechain than it does for the internal sidechain. This is due to the high levels of compression that can occur in Vulf Compressor and helps prevent extremely high-level output signals. As a result, sending the same signal to the external sidechain will result in a different output level (and slightly different sound) compared to just sending it to the input.

This control might seem unconventional (because it is), but it’s very useful for dialing in exactly how much external sidechaining you want.

Here’s an example: let’s say you have a great sounding mix with Vulf Compressor on the master bus. You’d like Vulf Compressor to compress a bit more when the drums hit, but you don’t want to increase the volume of the drums in the mix. No problem! Just route the drums to Vulf Compressor’s sidechain (in your DAW) and increase Sidechain External until you’re getting enough additional compression (pumping) from the drums.

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

Sidechain Tilt

Adjusts the frequency content of the signal being sent to the sidechain detector.

Negative values increase bass content in the sidechain, resulting in increased compression sensitivity to the bass frequencies.

Positive values reduce bass content in the sidechain, resulting in decreased compression sensitivity to the bass frequencies.

This control functions similarly to a sidechain high-pass filter but with more flexibility! In general, tilting the spectrum of the sidechain towards one direction tends to result in a compressed signal with tonal characteristics of the opposite direction (i.e. more bass in the sidechain means less bass in the output).

Want big, untamed bass? Try Sidechain Tilt at 100%. Alternatively, if you wanted a tighter, more restrained bass sound with more obvious pumping, try Sidechain Tilt at -100%.

Listen to the detector signal with Sidechain Listen in order to fine tune the spectral tilt applied to the sidechain.

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

Digital Ref Level

Digital Ref Level defines an approximate reference level as seen by the Vulf Compressor input.

Lowering the Digital Ref Level is equivalent to turning up the Input Gain and turning down the Output Gain by an equal amount. This greatly affects how the signal hits the compressor and lo-fi section, and it should absolutely be used for creative effect.

For louder sources, ref levels closer to 0.0dB may be most appropriate.

For the snappiest, attack-heavy compression, try Digital Ref Level at 0.0dB. For crushed & saturated compression, try Digital Ref Level at -36.0dB.

The Digital Ref Level control has some handy metering with a triangle (▲) indicator that points to Vulf Compressor’s best guess of the optimal reference level for the current input signal level.

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

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, Vulf Compressor 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 / Bernard Purdie / Chris Conover / Diana Zheng / James Dewitt Yancey / Mushy Krongold / Otis Jackson, Jr. / Roger Robindore / Stephen Ellison / TaeHo Park


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:

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 “” 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

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

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