Overview

The most powerful passive EQ ever.
Made by Brainworx in cooperation with SPL.

The original hardware Passeq was the first passive EQ to provide three separate frequency ranges for boosting and cutting. The Pultec EQ, the famous passive EQ from the 1950’s and 60’s, featured just two frequency bands and had very limited switchable frequencies.

SPL’s Passeq has 12 switchable frequencies per band, totaling 36 boost and 36 cut frequencies! Boost and cut frequencies are NOT identical, thus the resultant 72 frequencies per channel offer an enormous choice for the most elaborate EQ curves. The Passeq offers, for the first time, passive filter control possibilities with an unheard of abundance of filter choices.

The plugin faithfully reproduces the unique sound characteristics of the original hardware Passeq. All the complex interactions between each single filter are faithfully preserved in every detail.

One of the unique qualities of passive EQ designs is that the audio signal reacts to the multiple bands as one big filter network. Whenever a setting changes, the entire interaction between EQ bands occurs. This provides the unique characteristics and very special sound of these EQs - something that simply does not happen with active EQ designs.

The combination of all this filtering power, mastering grade sonic quality, and advanced M/S processing make the SPL Passeq THE plugin to have for mix busses and mastering. Its 10Hz Sub Band and the 16kHz Top band sound truly mesmerizing.

Features

  • Includes 2 Plugins: standard stereo and a mono version for individual tracks
  • M/S processing on board
  • Faithful reproduction of the original hardware’s beautiful-sounding interactions between passive filters.
  • 72 filters on six bands per channel.
  • Emulation of input and output transformers

Audio Examples

Customer Reviews

  • PassEQ

    ★★★★☆
    by maddison
    LOVE this sound of this plugin. Wish I could read the numbers on the GUI though!
  • SPL Passeq

    ★★★★★
    by Peter Indenkämpen
    I was looking for something like this for a while now: a neat plugin for subtile adjustments. But I got so much more! This one is great. I've got the feeling that everything gets brighter and some… Read More
  • SPL PassEq

    ★★★★☆
    by macman
    First impressions, I am not going to bore you with terms like punch and other well used terminology. The bottom end added a rich and tasty chocolate sauce to bourbon vanilla ice. The top end required… Read More
  • PassEq

    ★★★★★
    by MrB
    For this tool I can say only few things, absolutely excellent for any situation, from mix to mastering stage.I wish all the best to P.A Team,and Happy New Year
  • Passeq review

    ★★★★★
    by Bamboom
    Smooth eq, very transparent and you can dial the frequencies you need to boost or cut easily. The bottom end is so awesome, just brings out a roundness to the track or mix. Great tool, use for mixing… Read More

Specification

Supported Plugin Formats
AAX DSP, AAX Native, AU, AAX AudioSuite, VST2, VST3

Supported Operating Systems
MacOS 10.9 through 10.14
Windows 7 through 10

Mac
Intel CPU only (minimum 2 GHz recommended)

PC
Intel-compatible CPU with SSE2 instruction set (Pentium 4 compatible or higher; minimum 2 GHz recommended)

System Requirements
Display resolution: 1440 × 900px or 1280 × 960px or higher
Memory: 2 GB RAM

Downloads

With the Installation Manager, you can select, download and install just the Plugin Alliance products and formats you need for your system.

ChangeLog

Passeq

SPL Passeq - Changelog

Version 1.10 (Jul 10, 2019)
- General: macOS 10.14.5 Update compatibility
- General: Windows 10 1903 Update compatibility
- General: Fixed activation issue in Windows hosts set to non-English language (e.g. Cakewalk)
- General: AU: Fixed issue with increased CPU and memory on reopening UI
- General: VST3: Fixed issue with adapting to host knob mode, and now prioritizing linear
- General: VST3: Fixed issue with VST3 preset permissions
- General: VST3: Improved synchronization between parameter states and some UI functions, e.g. toolbar reset
- Fixed Pro Tools DAE error in AAX DSP Format

Version 1.9 (Nov 16, 2018)
- General: macOS Mojave compatibility
- General: Windows October 2018 update compatibility
- General: adding Windows High DPI support for VST2/3 plugins
- General: Fixed potential crashes in Cubase and other VST2 / VST3 DAWs
- General: Fixed potential CPU spikes and audio dropouts
- General: Fixed rendering in Pro Tools on the start of a session
- General: Fixed missing presets in Wavelab and other VST3 DAWs
- General: Improving keyboard control, fixing issues with catched keys preventing it from passing through to DAW
- General: Fixed parallel use of host sessions (e.g. with Live)

Version 1.8 (May 24, 2018)
- General: Microsoft Windows Redstone 4 compatibility
- General: Added computer keyboard control for plugin parameters
- General: Fixed Mouse scroll wheel not working in Windows 8
- General: Fixed an issue where plugins will not validate or load after a certain amount of plugins have been loaded (Windows)
- General: Fixed visual GUI freezes when adjusting DAW parameters, meters, analyzers (Mac)
- General: Fixed possible issue with Pick Pack licenses
- General: Small licenser stability fix
- Added Pro Tools Multi-Channel support

Version 1.7 (Oct 23, 2017)
- General: Mac OS High Sierra compatibility
- General: Fixed possible crash on online activation (Mac OS High Sierra)
- General: Fixed Logic Pro X not validating AU plugins (Mac OS High Sierra)
- General: Fixed CPU spikes and crashes with Cubase (Windows)
- General: Fixed bug that could lead to "AAE -6 error" in ProTools (Windows)
- General: Fixed crash with FL Studio
- General: Fixed crash when cross-opening plugins in various hosts
- General: Fixed crash when using mixdown in Audition
- General: Fixed crash in Final Cut Pro
- General: Fixed delayed parameter handling and crackling issues in Cubase with VST3
- General: Fixed bug where plugin settings were not saved in Harrison Mixbus
- General: Fixed bug that led to AAE error -9317 in ProTools when instantiating plugin
- General: Fixed bug where plugins did not render properly when "x ray" option is enabled in Sonar
- General: Modifications to factory presets were lost when reopening session
- General: Fixed mouse wheel behaviour with second monitor setup (Windows)
- Some plugins: Value labels do not appear every time when clicking on parameter in UI
- General: Faster instantiation time for plugins (Windows)
- General: Adding support for automation highlighting in Presonus StudioOne

Version 1.6.1 (Dec 20, 2016)
- General: Mac OS Sierra compatibility
- General: Fixed automation issues in AU and AAX
- General: Fixed license dialog use of special characters
- General: Improved AU preset support
- General: Performance improvements

Version 1.6 (Apr 1, 2016)
- General: Major UI codebase update
- General: Fixed possible crash when authorizing plugin
- General: Added gain reduction meter support for StudioOne 3
- General: Installers show version info in Windows "Programs And Features"

Version 1.5.4 (Jan 18, 2016)
- General codebase update
- Removing RTAS/TDM/VENUE 32-bit format support

Version 1.5.3 (Jul 18, 2015)
- General codebase update

Version 1.5.2 (Jun 22, 2015)
- General codebase update

Version 1.5.1 (May 27, 2015)
- Fixed wrong installation path for 32-bit Win VST plugin version

Version 1.5 (Apr 14, 2015)
- Added AAX DSP format

Version 1.4 (Nov 18, 2013)
- Licenser update (V3): Fixes and new features
- Prevent wrong mouse wheel behavior in 32-bit hosts on 64-bit Windows (Windows bug) (87, 95, 156)
- Fixed keyboard events after text input in Pro Tools Windows (325)
- Fixed parameter value display in VST3 (330)
- Fixed toolbar triggering automation (335)
- Fixed window size issues (279, 327)
- Fixed possible preset issues in Pro Tools 11 (312)
- Fixed AAX Audiosuite latency compensation (311)

Version 1.3.1 (Jun 28, 2013)
- fixed installer for 32-bit Windows

Version 1.3 (Jun 21, 2013)
- added support for Pro Tools 11
- licenser update: fixes and new features
- fixed automation with VST3 offline processing

Version 1.2 (Apr 05, 2013)
- otimized performance
- fixed issues with possible high CPU load
- fixed possible host hanging issue
- fixed Avid related issue in Pro Tools 10 that could lead to sporadic crashes
- fixed issue that could lead to values jumping in Ableton Live

Version 1.1.4 (Jan 16, 2013)
- added support for high resolution displays (e.g. Apple Retina)
- licenser: improved Pro Tools activation

Version 1.1.3 (Oct 31, 2012)
- fixed potential TDM automation issue under Mac OS
- licenser: minor fixes
- licenser: fixed activation issue under Mac OS 10.5 / Pro Tools 8
- licenser: fixed potential crash in online activation under Mac OS
- licenser: fixed issues with USB stick activation
- licenser: fixed file handling with offline activation

Version 1.1.2 (Jun 22, 2012)
- Licenser update: added toolbar and USB activation
- Fixed response issues in AU format
- change company string to Plugin Alliance

Version 1.1.1 (Jan 28, 2012)
- Resolved DAE/AAX AudioSuite incompatibility
- Fixed audio problems with certain licenses
- Fixed hanging 64-bit version after changing parameters

Version 1.1 (Jan 2, 2012)
- Added presets
- Added AAX Native
- Added 64-bit support
- Added Plugin Alliance Licenser