# Audio Effects

MultitrackStudio features a large number of built-in high-quality audio effects. In addition, AU / CLAP / VST plugins can be used.

The following audio effects are available:

- Auto Wah
- Automated Fader
- Band Effect
- Chorus
- Compressor
- Convolutor
- Deesser
- Doubler
- Dynamics
- Echo
- EQ
- Exciter

- Flanger
- Guitar Amp
- Master Limiter
- Mid/Side Effect (Pro)
- Multi Effect
- Multiband Compressor (Pro)
- Noise Gate
- Parallel Effect
- Phase Inverter
- Phaser
- Reverb
- Rotor

- Saturator
- Stereo Effect
- Stereo Imager
- Transposer
- Tremolo
- Tuner
- Vibrato
- Vocal Tuner
- AU Plugins
- CLAP Plugins
- VST Plugins

Effect Slot
Effect Selector (Pro)

Effects are used in Effect Slots. Effects can be selected by clicking the slot's down arrow (or by right-clicking the slot).The Effect Selector contains all MultitrackStudio effects, AU / CLAP / VST plugins, Convolutor impulse responses, and effect presets.

Clicking the slot shows the effect's user interface. All effects have a Bypass button. If the effect is not active (it's either bypassed or its controls are in a neutral position), the text in the effect slot's display appears dimmed. Inactive effects do not use any processing power.

Tip: you can click the bottom-left corner of an effect slot to toggle the effect's Bypass button. A "B" appears if you hover the mouse over this area.

Effects can be moved using drag-and-drop. Holding the Option key while doing this will copy the effect instead of moving it. Adding or removing effects can be done while the transport is running.

The Plugins option's ☰ button provides access to the Plugin Manager.

### Search

A search term can be typed to filter the Effect Selector. AU, CLAP, and VST list items have invisible tags so you can use "au", "clap", or "vst" search terms to hide other types of plugins.
While an effect's user interface is visible, you can press Option-Command-F to pop up the selector list. It remembers the search term, so you can easily try the next effect that matches it.

### Presets

Presets can be loaded or created using the Presets button, which appears on the effect's user interface. Most effects come with built-in presets.

### Controlling the Transport

You can still use the keyboard or mouse to control the transport while an effect's user interface is visible.

Third-party plugins may steal keyboard focus, so the MultitrackStudio keyboard shortcuts may no longer work. You can click the right hand part of the plugin window (the "MultitrackStudio part") to restore keyboard focus.
MultitrackStudio attempts to let the Space, Left Arrow, Right Arrow, Home, End, Page Up, and Page Down keys control the transport even if the plugin steals keyboard focus. You can hold the Ctrl key to force a key to be sent to the plugin only, so it doesn't affect the transport. If this feature causes problems with a plugin, you can go to the Plugin Manager and check the Keybrd box.