Bertom EQ Curve Analyzer is an analyzer & signal generator plugin to see the frequency and phase response of any plugin (or hardware).

This plugin started as a developer tool but has been simplified so that it doesn't require a complicated setup to work. Just sandwich the effect(s) you want to analyse between two instances, the first one set as the signal generator and the second one as the analyzer. Then set the latency if needed, That's it! It also features a "group" system that enables to compare two analysis in real-time.

It's particularly useful as a learning tool to see what classic EQs emulations are doing for example.