The Metric AB plugin enables you to compare your mix to any reference mix with a simple click of the A/B button.

It is designed to provide you with a clear, intuitive workflow and unique analysis tools. Welcome to the new standard in mix referencing. Just put it on your master channel and switch between your actual mix and CD or iTunes mixes by your favorite engineers and bands, other versions of your mix, etc.

Drag and drop up to 16 reference tracks into Metric AB and take advantage of features such as instant volume matching, cue and loop functions and various monitoring modes. Playback of your reference mixes can be synced with your DAW to create the perfect workflow.

Get technical with more advanced features including multiple analysis modes (spectrum, correlation, stereo image) and industry compliant LUFS loudness and dynamics metering. With Metric AB on your master buss you get all the data you need about your mix and reference audio simultaneously.

Metric AB will play back various formats, like WAV, MP3, AIFF and FLAC! All from within your mix session.

Just put it on your master buss after all the processing plugins you use (limiters, EQs, etc.).

Metric AB offers professional LUFS metering, so it’s the perfect buddy for bx_masterdesk and other mastering solutions!


  • Compare your audio with the click of a button
  • Load up to 16 reference tracks in any format
  • Set loop and cue points that sync with your DAW
  • Five super detailed analysis and metering modes including LUFS

Customer Reviews

  • ADAPTR Metric A/B

    by John Durant
    The Metric A/B plugin is another one of those PA must-have’s that combines several essential metering and analysis tools into a single extremely useful plugin. The efficiency and design of this… Read More
  • Top in the game

    by Carlos Mosqueda
    I Love it!! it really Improve my workflow, I used 4 plug ins fo qhat this one Does!! Really beatiful interface!

    This plug-in has become one of my main tools for mastering because of the accurate information it provides. At first I was a little apprehensive about purchasing because I have a standalone outboard… Read More
  • Metric AB is perfect

    by T. W. Tobin
    I don't often rate a plug in as 'perfect', but this one is pretty much that. I debated whether to buy it, but now after using it for mastering an EP worth of songs, I can say this tool will now be… Read More
  • Much better than what else is out there

    by aroomstudios
    I have uses Magic AB for a long time. It works great. I got Metric AB for a deal so I bought it. WOW, this just blows away what I was using. The spectrum view is great you can move it around and I do… Read More


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

MacOS 10.9 through 10.14
Windows 7 through 10
Pro Tools 11 or higher or most VST/VST3/AU-compatible hosts running on a supported operating system


With the Installation Manager, you can select, download and install just the Plugin Alliance products and formats you need for your system.


Metric AB

Adptr Metric AB - Changelog

Version 1.0 (Sep 4, 2018)
- Release version