Bullhorn and Loudspeaker Emulation

Megaphone - Bullhorn / Loudspeaker Simulation Plugin - GUI

Bullhorn and Loudspeaker Emulation

Megaphone is a plugin that emulates an amplified bullhorn / PA loudspeaker.
It features two loudspeaker emulations (Mode I and Mode II), feedback control (slapback echo), and a noise section.
Megaphone can be used to make any audio source sound as if it’s being played by a bullhorn.

Megaphone Feedback and Noise Section


The feedback section is essentially a slapback effect. When using megaphones, the output of the loudspeaker can be captured again by the input microphone, introducing a delay/reflection and the usual feedback tones (those can be triggered with high gain sources and feedback amount higher than 50%).


The megaphone noises can be enabled by the Trigger button. There are two types of noise: Button and Burst. You can balance the mix between the two noises with the Source parameter.
The button noise is the noise made by clicking on the megaphone button to enable its microphone.
The burst is the typical background noise of the loudspeaker.
If the envelope is enabled, the Burst noise will follow the transients of the input signal.

Megaphone Demo

Try Megaphone for free with some limitations: silence for 3 seconds every 45 seconds, saving disabled.
If you like it, you can purchase a license and then authorize the demo version.


Requires macOS 10.9 or higher
AU, VST2, VST3, AAX, CLAP (64bit only)


Requires Windows 7 or higher
VST2, VST3, AAX, CLAP (64bit only)


Requires Ubuntu 20.04 or newer
VST2, VST3, CLAP (64bit only)


  • 2 Loudspeaker emulations
  • Overdrive + Bandwidth control
  • Feedback / Slapback
  • Preset system with randomizer

Download the Manual (PDF)

System Requirements

 Windows 7 – 11
VST2, VST3, AAX, CLAP (64-bit)

 OS X 10.9 – macOS 13
VST2, VST3, AU, AAX, CLAP (64-bit)
Universal 2 Binary

 Ubuntu 20.04 LTS
VST2, VST3, CLAP (64-bit)

Copy Protection

To activate your plugin you can choose between Online and Offline authorization.
Create an account, log in through the plugin to activate, or download your license file for offline activation.


1 license up to 3 computers

No iLok

We don’t like dongles

No Internet

No connection required to activate

2023/04/18: v1.5.4

  • Added: macOS 13 Ventura support
  • Added: Windows 11 support
  • Added: CLAP plugin format
  • Added: AAX Silicon Support
  • Added: Linux VST2, VST3, CLAP plugin formats
  • Improved: CPU and memory usage
  • Fixed: Popups not opening correctly with multiple instances in Logic Pro
  • Fixed: Minor bugs

2022/03/15: v1.5.3

  • Added: macOS 12 Monterey support (Universal 2 Binary)
  • Added: Light and Dark UI mode
  • Added: Internal support for left-hand mouse users
  • Improved: CPU and memory usage
  • Fixed: Potential crash with samplerates lower than 44.1kHz

2019/12/27: v1.5.2

  • Fixed: VST3 UI issue on Windows with scaling over 100%
  • Fixed: Conflicts with older AudioThing plugins

2019/11/29: v1.5.1

  • Added: macOS 10.15 Catalina support
  • Added: Parameter Lock
  • Added: Edit Value option for Knobs
  • Added: Notification System
  • Improved: CPU and memory usage
  • Fixed: DSP not updating properly on some presets
  • Fixed: Minor graphics issues when closing multiple plugins

2019/03/01: v1.5

  • Added: VST3 plugin format
  • Added: Online Authorization Form
  • Added: Noise Source Parameter
  • Added: Global option – Resizable Window
  • Improved: New GUI with support for Retina/HiDPI displays
  • Fixed: MAC with High Sierra (APFS) presets scrambled
  • Fixed: Bypass noise in Pro Tools

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