Plugin Alliance SPL PQ v1.1.0

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
Home Page-

https://www.plugin-alliance.com/en/products/spl_pq.html