MultiInspectorFree is a 31-band spectral analyzer designed specifically for multitrack audio environments. It offers a straightforward solution for simultaneous spectral analysis of multiple audio signals, allowing users to monitor and compare frequency content across several tracks with ease. The analyzer provides clear and accurate visualization, making it an essential tool for mixing and mastering processes.

The first instance of MultiInspectorFree functions as a standalone 31-band analyzer, while additional instances share their spectral data automatically. This synchronization enables all open windows to display identical analysis results, simplifying workflow by allowing users to keep just one editor window open after setting up their desired number of instances. The interface dynamically adjusts the width and color of the level bars based on how many instances are active, enhancing visual clarity.

Based on the ISO 266:1997 standard, MultiInspectorFree uses a third octave frequency analyzer covering the 20 Hz to 20 kHz range, ensuring accurate frequency band representation. Pink noise appears flat in its frequency spectrum, which helps users evaluate and calibrate their audio signals effectively. The plugin supports up to four instances at a 44.1 kHz sample rate, making it suitable for various multitrack setups.