CORRECTIVE EQ

Bring the correction curve you already trust. Corrective EQ renders it into your signal path — no measurement suite required.

Headphone and room correction, applied right: FIR or IIR, minimum or linear phase, native rate through 8× oversampling.

Then dial in exactly how much correction with a true Wet/Dry mix. Free.

Mac (Apple Silicon)
Mac (x86 / Intel)
Windows
Version V0.9.5
Get Audio Unit Mac versions
Corrective EQ correction curve
Corrective EQ room correction curve visualization
WHAT IS CORRECTIVE EQ

Corrective EQ is a final correction stage for imported frequency-response curves — built for headphone correction, room correction, and any target-curve workflow.

It is not a parametric EQ — there are no bands to sweep or Q to tune. You supply a proven target response (from AutoEQ, Equalizer APO, REW, a headphone database, or your own measurements), and Corrective EQ renders it faithfully with arbitrary-magnitude filters that match any curve shape.

Generating great correction curves is already a mature, well-served space. Rather than reinvent a measurement app, Corrective EQ solves the part that’s usually an afterthought: applying your curve with real filter quality, phase control, and a blend knob.

Acoustic speakers background
HOW CORRECTIVE EQ WORKS

Bring the target response you already trust and choose exactly how it’s rendered:

  • Imports CSV, AutoEQ / Equalizer APO, GraphicEQ, and plain frequency/dB text (20 Hz–20 kHz)
  • FIR convolution — minimum or linear phase, 4,096–65,536 taps
  • IIR / SOS cascade — lower latency and CPU
  • Oversampling up to 8× (176.4/192 kHz, 352/384 kHz)
  • Wet/Dry mix, 0–100%
  • ±12 dB output trim
Corrective EQ spectrogram and loudness analysis Corrective EQ correction curve detail
Corrective EQ analyzer with polar level, polar sample, vectorscope, and FFT graphsCorrective EQ spectrogram window — time-frequency analysisCorrective EQ loudness meters — input, output, and deltaCorrective EQ waveform window — input, output, and gain reduction
SEE AND HEAR THE DIFFERENCE

Corrective EQ ships with a full analysis suite, so you can see exactly what your correction is doing — not just hear it.

Track levels with input, output, and gain-reduction meters, plus compliant loudness metering on the input, the output, and the delta between them — so you always know how much the correction is changing your signal.

Read the stereo field with a Lissajous vector scope, polar sample, and polar level displays. Analyze frequency content with an FFT spectrum in stereo, left/right, and mid/side, plus a full spectrogram and a waveform view.

TECHNICAL SPECS

Mac

CPU: Apple Silicon or 64-bit Intel Mac

Memory: 8 GB RAM minimum, 16 GB recommended

Storage: 1 GB free disk space

Operating System: macOS Ventura 13 or newer

Screen Resolution:
Minimum: 1280x1024
Recommended: 1600x1024

Plugin Formats: Standalone, AU, AUv3, VST3, AAX

Windows

CPU: 64-bit Intel or AMD CPU

Memory: 8 GB RAM minimum, 16 GB recommended

Storage: 1 GB free disk space

Operating System: Windows 11

Screen Resolution:
Minimum: 1024x768
Recommended: 1280x1024

Plugin Formats: Standalone, VST3, AAX

Correction Import

Formats: .csv, .txt, .eq, .apo

CSV frequency/dB, mono or per-channel (left/right)

AutoEQ / Equalizer APO parametric (Preamp, peak, low/high shelf) and GraphicEQ

Other parametric filter types (high/low pass, band-pass, notch, all-pass) are skipped on import

Curve range: 20 Hz to 20 kHz (points accepted to 24 kHz), up to 65,536 points

Filter Rendering

FIR: minimum or linear phase; 4,096 to 65,536 taps

IIR / SOS: linear or adaptive band spacing

Oversampling: native, 4X (176.4/192 kHz), or 8X (352/384 kHz)

Output: Gain -12 to +12 dB; Wet/Dry Mix 0 to 100%

DOWNLOADS

Version V0.9.5
Mac (Apple Silicon)
Mac (x86 / Intel)
Windows

macOS includes Standalone, AU, AUv3, VST3, and AAX. Windows includes Standalone, VST3, and AAX.

Mac AUv2 Plugin

Optional Version V0.9.5

The standard installer above already includes the current macOS plugin formats listed in Technical Specs. Install an AUv2 build below only if your host application specifically requires AUv2 — for example, SoundSource by Rogue Amoeba.

Important: macOS allows only one Audio Unit version of Corrective EQ on a system at a time. Installing the AUv2 plugin will replace any existing AUv3 install of Corrective EQ, and vice versa. The standalone app and VST3 plugin are unaffected.

Mac AUv2 (Apple Silicon)
Mac AUv2 (x86 / Intel)

USER MANUAL

DOWNLOAD USER MANUAL (V0.9.5)

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