UNFILTER

The deal

$98.26 at Loot Audio (down from $265.57), 63% off. Sale ends September 14, 2026.

What it is

UNFILTER is a real-time plug-in by Zynaptiq that automatically detects and removes filtering effects, such as comb filtering, resonance, or excessive equalization, effectively linearizing the frequency response of a signal. It can also capture a filter response and apply it to a different signal, export it as an impulse response file, and perform mastering-grade adaptive, free-form, and graphic equalization.

Who it's for

Suits producers, mixers, and sound designers who need to clean up problematic recordings, dialog, or field audio, plus anyone working in film post, broadcast, or forensic audio where matching acoustic spaces and fixing resonance issues matters.

Key features

• Automatically detects and removes resonances, EQ artifacts, and comb-filtering from any signal
• Applies a measured filter response to a second signal to match its acoustic space, or exports it as a WAV impulse response
• Includes three mastering-grade EQ modes plus a 96dB per octave shelving high-pass filter that cuts low-end rumble
• Built for a fast, streamlined workflow with an output limiter for unsupervised batch processing