Brainworx bx_stereomaker

From Mono to Stereo With Ease!



The bx_stereomaker is a frequency-optimized M/S upmixing plugin that quickly and easily converts mono signals to stereo.

How many times have you had to deal with a well-recorded signal that just won´t fit in the mix because it´s mono? With modern mixes becoming both tighter and wider, adding reverb or modulation effects can easily destroy the tight center of a mono lead vocal, guitar, or synth track. Still, you need to process and spread those sounds to lay them perfectly into the mix. So what now?

bx_stereomaker, that’s what.

bx_stereomaker creates a virtual S signal with analog style filters using Brainworx legendary M/S stereo algorithms. This friendly plugin will take any mono signal and make it stereo while allowing you to balance the center position. You can even focus the process on specific frequency ranges in your signal. And you can solo the virtual S signal!

Do you own bx_rockrack?

bx_stereomaker is part of the PRO version of the bx_rockrack guitar amp system. If you already own a bx_rockrack license, you can get bx_stereomaker as an "Add On" FOR JUST $50!

Please contact our Sales Support to get your personal voucher code.


  • Hi-Damp knob allows you to create a warm sounding stereo expansion without sounding tinny
  • Adjust the stereo-width added to the mono source signal from 0% to 300%
  • All parameters except for Tone can be switched on/off by clicking on the panel above their respective knob
  • Bypass, Undo / Redo, A/B/C/D Settings plus Copy / Paste
  • 32 steps of Undo / Redo give you the freedom to experiment without losing your initial ideas
  • 4 different settings per Preset (A/B/C/D) can be used to set and recall momentary snapshots that can be automated as well. Create a preset for your chorus, another one for the verses, and so on.

Audio Examples

Industry Reviews

  • Morgan Page
    Morgan Page

    I've been hunting for a plugin like this for ages. It's hard to get phase coherence and width with other stereo wideners, but this provides the best of both worlds. Keeping your song big and… Read more

Customer Reviews

  • ★★★★★
    by djayart
    March 4, 2016
    Very nice plugin, i use it mainly on mono clean guitar.
  • ★★★★★
    Space Maker
    by Headstack
    January 17, 2016
    The bx_stereomaker is a recently new addition to my plugin pool, yet has proven it can do more than I had hoped.The original plan was splitting mono d.i. bass a few degrees L&R to male a hole for… Read more


Supported Plugin Formats
AAX DSP, AAX Native, AU, AudioSuite, VST2, VST3

Supported Operating Systems
Mac OS X 10.6 through 10.11
Windows 7 through 10
Pro Tools 10 or higher or any VST/VST3/AU-compatible host running on a supported operating system

Intel CPU only (minimum 2 GHz recommended)

Intel-compatible CPU with SSE2 instruction set (Pentium 4 compatible or higher; minimum 2 GHz recommended)

System Requirements
Display resolution: 1440 × 900px or 1280 × 960px or higher
Memory: 2 GB RAM


If you would like to download and install all of the Plugin Alliance plugins, please use the "Plugin Alliance All Installers" download link.