Blackboard EQ

Draw Any EQ Curve You Like—in Chalk!

Blackboard EQ is an equalizer designed to feel as intuitive as drawing your EQ curve directly onto the screen.

Alongside static EQ, it brings per-band Dynamic EQ, Saturation, L/R and Mid/Side processing, and selectable phase modes together in a single interface. It is ideal for mixing situations where you want to see exactly how much processing is being applied and make precise adjustments only where they are needed.

Product Overview

Add up to 24 bands, with independent control over frequency, gain, Q, filter type, slope, and processing channel for each band.

Eight filter types are available: Low Cut, Low Shelf, Bell, Notch, Band Pass, High Shelf, High Cut, and Tilt. Cut filters offer slopes from 12 to 96 dB/oct, with an additional Brickwall option available in Linear Phase mode.

Each band can be assigned independently to Stereo, Left, Right, Mid, or Side, allowing you to process only the exact component you want to target.

Enable Dyn to turn an individual band into a Dynamic EQ, complete with Threshold, Range, Attack, and Release controls. This makes it easy to tame harshness or muddiness only when it appears. The Sat section provides Drive and Character controls, allowing you to add texture and colour only to selected frequency ranges.

Alt-drag an EQ node to audition that band in isolation while searching for the right frequency. You can also right-click any EQ point to add a text note, making it easy to record why a particular adjustment was made.

Anything drawn in FREE Draw mode is purely visual and has no effect on the audio. Your chalk annotations are saved with the session and remain intact when switching presets or using A/B comparison.

Features

• Switch between Zero Latency and Linear Phase modes. Use Zero Latency for fast, responsive everyday processing, then select the desired Linear Phase resolution for more precise mixing and mastering applications.
• Blackboard EQ also includes 2x and 4x oversampling, Pre/Post analysers, A/B comparison, Proportional Q, Output Gain, and other tools designed to support faster and more informed mixing decisions.
• Up to 24 EQ bands
• Low Cut, Low Shelf, Bell, Notch, Band Pass, High Shelf, High Cut, and Tilt filters
• Slopes from 12 to 96 dB/oct, plus Brickwall in Linear Phase mode
• Per-band Stereo, Left, Right, Mid, and Side processing
• Per-band Dynamic EQ with Threshold, Range, Attack, and Release controls
• Per-band Saturation with Drive and Character controls
• Switchable Zero Latency and Linear Phase modes
• 2x and 4x oversampling
• Pre/Post analysers and A/B comparison
• Proportional Q and Output Gain
• Alt-drag band solo auditioning
• Right-click EQ points to add notes
• FREE Draw mode for chalk-style annotations with no effect on audio
• Factory presets and support for saving user presets

Ideal For

• Taming harshness in vocals or bass only when it occurs
• Cleaning up specific elements using Mid/Side processing
• Adding weight to the low end or brightness to the high end with frequency-specific saturation
• Using phase-coherent Linear Phase processing on the master bus
• Auditioning individual frequency ranges with Alt-drag while making corrections by ear
• Saving the purpose of EQ decisions directly in the session using notes and labels