Personal headphone calibration

Stop Guessing. Start Trusting Your Headphones.

Hear Flat helps producers, mixers, and engineers create a personal headphone correction curve by ear, without expensive measurement microphones or complicated setup.

Download Windows Installer Buy Hear Flat Pro
Hear Flat plugin main interface showing a 24-band calibration curve

Why Hear Flat

Most Headphones Are Designed To Impress. Not To Mix.

More Bass

Consumer voicing can exaggerate low end, making kick and bass decisions harder to trust.

More Sparkle

Boosted treble can hide harshness, dull vocals, and mix problems that appear elsewhere.

More Hype

Exciting playback is useful for listening, but it can distort your judgment while mixing.

Hear Flat helps reveal those imbalances so your mixes translate more consistently.

Calibration

Calibrate By Ear

Noise-Based Calibration

Use pink or white noise and match loudness across 24 frequency bands.

No Measurement Hardware

No microphones. No calibration rigs. No complicated setup.

Interactive Graph

Drag nodes directly on the graph and hear adjustments instantly.

Hear Flat graph editor with draggable calibration nodes

Fine Tune With Music

Fine Tune With Real Music

Calibration gets you close. Fine Tune gets you comfortable. Switch between Flat and Current while listening to familiar music and make small refinements that suit your ears and workflow.

Flat vs Current Band Audition Live Editing Instant Feedback

Included Tutorial

A Guided Calibration Workflow, Not Just A Plugin.

The Hear Flat tutorial turns the first session into a clear step-by-step process: set your reference, shape the curve, fine-tune with music, and save a profile you can trust.

Open The Full Tutorial
01

Start With A Reference

Use the built-in calibration noise to identify where your headphones feel exaggerated or recessed.

02

Shape The Curve

Move through the 24 bands methodically so the correction is smooth, controlled, and easy to repeat.

03

Verify With Music

Switch to familiar tracks, compare Flat vs Current, and make the small final moves that matter.

04

Keep The Workflow

The installer places the editable HearFlat Tutorial DOCX locally with the manual, readme, and license files.

Hear Flat interface used throughout the guided tutorial workflow
Curve quality and calibration confidence tutorial checkpoint
Confidence checkpoints
Curve library profile management tutorial checkpoint
Profile management
Hear Flat header showing Curve Quality and Calibration Confidence metrics

Confidence System

Not Just A Curve. A Verified Calibration.

Curve Quality measures how smooth and balanced your correction curve is. Calibration Confidence measures how thoroughly you have verified your results through refinement, revisits, and listening tests.

95% Curve Quality
96% Calibration Confidence

Curve Library

Manage Every Headphone You Own

Save, organize, duplicate, export, and compare multiple headphone calibration profiles.

Curve Library Save Variations Duplicate Curves Rename Profiles Export Existing Curves
Hear Flat Curve Library with saved headphone profiles and action icons
Hear Flat EQ Export dialog showing selectable export formats

Export Anywhere

Use Your Calibration Anywhere

Export your Hear Flat correction curve and recreate it in your favorite EQ.

24 Band

Exact Hear Flat translation

10 Band

ISO-style approximation

5 Band

Stock EQ compatible

Parametric

Advanced EQ workflow

Settings

Built Around Your Workflow

Maximum Correction Limits

Prevent extreme adjustments.

Autosave Recovery

Protect your work.

Fine Tune Controls

Customize audition behavior.

Export Smoothing

Optimize exported EQ curves.

Hear Flat settings dialog with calibration, display, fine tune, and export controls

Who It's For

Designed For Modern Headphone Workflows

Bedroom Producers

Get more reliable mixes from affordable headphones.

Content Creators

Create more balanced audio for videos and streaming.

New Mix Engineers

Learn your headphones and make better decisions.

Beta Access

Join The Hear Flat Beta Program

Download the free version, request PRO access, and tell us what headphones you use. Strong beta feedback helps shape the next wave of Hear Flat testing.

Download Free Request Pro Access
Free download first Manual PRO access review Headphone feedback requested

Request Beta Access

Use the same email you want tied to any beta license.

Submitting does not instantly issue a PRO license. It adds you to the private tester list for review.

Pricing

Start Free. Upgrade When You Need Profiles.

Free

$0
  • 24-Band Calibration
  • Fine Tune With Music
  • Curve Quality
  • Calibration Confidence
  • EQ Export
  • No Save
  • No Curve Library
  • No Profile Management
Download Windows Installer
Best for studios

Pro

$29
  • Everything in Free
  • Save Curves
  • Curve Library
  • Multiple Profiles
  • Autosave Recovery
  • Future Updates
Buy Hear Flat Pro

Ready For Profile Management?

Open the Hear Flat checkout page for secure Stripe payment and automatic license delivery.

Go To Checkout

Download

Start Mixing With Confidence.

Download the Windows installer and create your first headphone calibration in minutes.

Installs the Hear Flat VST3 to the default system VST3 folder and places the manual, readme, license text, and tutorial under BlackBoxx/Hear-Flat.

Download Windows Installer Buy Hear Flat Pro

Manual install: download the VST3 ZIP.

Hear Flat plugin ready for headphone calibration