TBProAudio has announced the release of a gain control which enables level matched and sample accurate A/B comparison of FX chains.

We at TBProAudio found us very often in mixing or mastering situations where we need to quickly identify the contribution of a certain plugin (FX) or even a complex FX chain to the sound.

Most DAWs can easily enable/disable (AB) single plugins or even whole FX chains, but in most case there is an audible loudness difference between both cases. In order to compare the impact of a plugin chain objectively the loudness of the incoming signal should match with the loudness of outgoing signal.

Comparing the plugin effect at equal loudness levels avoids the “louder is better” – pitfall.

AB_LM features

  • Match pre and post-FX loudness.
  • Match pre-FX loudness with reference level.
  • 3 loudness match modes: manual, auto and gain stage.
  • FX chain drive.
  • Up to 16 sender/receiver pairs.
  • Automatic latency measurement/compensation.
  • Adjustable RMS measurement window.
  • Bypass AB_LM.
  • 4 snapshot slots.
  • Very CPU friendly.
  • Large and easy to use GUI.

AB_LM for Windows and Mac (VST/AU/RTAS/AAX) is available for purchase for 49 EUR (excl. VAT).

More information: TBProAudio / AB_LM