Instructions for:
Effects overview

Audio Effects from Rogue Amoeba

Audio Hijack is often used to host third-party audio unit effects, but it also features a selection of our own audio effects, created in-house by Rogue Amoeba.

This page provides a simple overview of those effects and ways they can be used to enhance your sound.

10 Band EQ

Fine-tune specific frequencies by adjusting the relative levels of 10 different frequency bands.


Adjust relative levels of audio playback between the left and right stereo channels.

Bass & Treble

Adjust bass and treble to quickly boost or filter out unwanted frequencies.


Adjust channels with multiple settings to Swap the left and right channels, sum both channels to Mono, Duplicate, Kill, or Invert the Left or Right channels, or Subtract the Left and Right Channel audio to isolate to center channel.

Low Pass Filter

Remove or reduce high pitched/high frequency sounds in audio by setting a cutoff frequency, above which audio is filtered out and below which lower frequency sounds can continue to pass.

Mono Enhancer

Enrich mono audio with a stereo sound by setting a crossover frequency to create a stereo image.


Direct audio to the left or right stereo channel.


Increase or lower audio's volume, with up to 4x overdrive settings for especially quiet sources.

Advanced effects


Set a threshold to remove high pitched clicking sounds from audio.


Adjust the base and mount of the effect to remove low frequency humming from audio.


Learn and then remove high pitched noise from audio.


Duck one audio signal, such as music, under another, such as a voice over microphone, so that when audio is detected from the overlay source, the volume of the ducked source is automatically reduced so that the overlay source is heard clearly.

Input Toggle

Toggle between two sources, which will mute audio from one when switching to the other.

Magic Boost

Boosts quiet audio so you can hear it, while louder audio is left untouched to increase the perceived overall volume without adding distortion.


Mix your audio by setting levels and pan settings for multiple audio sources.

Simple Compressor

Reduce dynamic range of audio, making quiet sounds louder and loud sounds quieter to even out the overall volume level.


Precise audio delay that's useful for offsetting audio playback to sync with other sources.

Time Shift

Pause and rewind live audio or jump to real time.

Learning more about audio effects

Experimenting by listening to your audio output while adjusting effect parameters is a useful strategy for getting to know any audio effect. Trying this approach with different effects and audio sources can help to build intuition for how audio effects can change your sound and when they might be useful to add to your setup.

For more in-depth information, books on sound recording offer perspectives on the technical and creative problems that audio effects can solve.