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SPL

PQ

The king of parametric EQs

The PQ Mastering Equalizer is a fully parametric, dual-channel five-band equalizer, based on SPL’s pioneering 120V rail technology. Able to switch between constant and proportional Q modes with the push of a button, this kind of circuit has not yet been achieved in any other analog equalizer.

Designed for precision performance

Each of the five bands of the PQ can be independently activated, deactivated, or switched between Constant Q and Proportional Q modes for even more targeted cuts and boosts. Thanks to the “1/4 Gain Switch”, you can reduce the range of the EQ from +/-20 dB down to +/-5 dB cut or boost to easily perform the small corrections common in mastering. And, with the detented potentiometers, precise settings are easy to dial in.

Now improved with plugin-only features

Brainworx’ familiar “Extra Unit” adds features to this legendary EQ that cannot be found on the original analog units. This retractable module includes Tolerance Modeling Technology, M/S Processing, Mono-Maker, Stereo Width, THD, Auto Listen for all five bands and more, providing everything you need in the modern digital domain.

Features

  • Exacting emulation of the original analog PQ mastering equalizer, approved by SPL
  • Fully parametric mastering grade EQ, that offers precision, flexibility and detailed musicality
  • Independently switch between Constant Q and Proportional Q for all 5 bands for more targeted boosts and cuts
  • BRAINWORX Plugin Only Features added to the BX Module
  • Brainworx ́ TMT inside: Tolerance Modeling Technology (TMT, US Patent No. 10,725,727) simulates channel-to- channel variances in electronic components for the most realistic analog sound in the box
  • Auto Listen - To more accurately position the filter in the frequency domain by isolating the effect of the EQ
  • Mono-Maker - Sums your low-frequency content to mono, giving you focused, punchy bass response
  • Stereo Width - To expand the stereo width of your tracks
  • Separate Mono Version - for using individual tracks such Kick Drum, Snare, Bass, Vocals, etc.
  • Scalable User Interface
  • Artist Presets

Sound Examples

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Product Information

Specifications

Supported Plugin Formats

AAX AudioSuite, AAX DSP, AAX Native, AU, VST2, VST3

Supported Operating Systems

macOS 15 down to macOS 12
Windows 11 down to Windows 10

Mac

Intel, or Apple Silicon

PC

x64-compatible CPU

System Requirements

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

Downloads

With the Installation Manager you can select, download & install all the Plugin Alliance products. Select any and all formats you need for your system! Mac & PC.

Changelog

PQ Changelog

SPL PQ - Changelog

Version 1.2.1 (Oct 9, 2023)
- General: fixed CPU spikes on Mac OS

Version 1.2.0 (Aug 15, 2023)
- General: added native Apple Silicon compatibility for AAX
- General: added macOS Ventura support
- General: improved plugin loading time in the DAW
- General: fixed issue causing Logic to crash when closing the plugin UI
- General: improved font drawing behavior

Version 1.1 (Feb 01, 2023)
- General: codebase refactored
- General: Fixed that the signal on the right channel is lower then left when Auto-Bypass is turned on in Mid/Side mode.
- Added feature to set default UI color

Version 1.0 (Sep 22, 2022)
- Initial Release