Consistent Interruption has released Pult EQ, a free Pultec-style tube EQ plugin for Windows and Linux.
Pult EQ is open-source, lightweight, and perfect for adding vibe and color to your mixes. The only drawback is that it isn’t available on macOS, and I haven’t seen any info about a potential Mac version on the developer’s website.
Pult EQ isn’t meant for surgical work. This one’s all about character and making your signal sound richer (as opposed to sounding cleaner).
You get the classic low-end boost and attenuation for that famous “Pultec trick,” along with high-frequency controls and mid boosts. It also adds saturation, which is based on Airwindows’ Tube2 model, giving it extra warmth and grit when needed.
The saturation section even features automatic gain compensation and offers up to 16x oversampling, which is pretty cool for a freebie. And by the way, if you want more options for saturating the bass, try our free BPB Bassaturator plugin.
One of the coolest features in Pult EQ is the addition of stereo and mid/side processing modes. I haven’t seen this in too many other freeware Pultecs.
You can apply the EQ to the stereo signal or isolate changes to the mid or side channels. That’s powerful if you want to shape the stereo image or clean up muddiness without affecting everything.
If you’ve never used a Pultec-style EQ before, here’s a quick tip: try boosting and attenuating the same frequency. The resulting EQ curve gives you a resonant peak while trimming around it. This works wonders on bass and kick interplay or taming harshness in guitar tracks while adding presence.
Another thing I love about Pult EQ is the GUI. It has a clean layout with deep blue tones that hint at the classic Pultec aesthetic without imitating it. Everything is exactly where you’d expect, making it intuitive even if it’s your first time using this kind of EQ.
Installation is as simple as it gets. Just unzip the file and drop the plugin into your VST3 folder. No registration, no activation, and the source code is right there on GitHub for anyone who wants to tinker or see how it works.
Sadly, there’s no macOS version yet, so I won’t be able to use it on my portable Macbook Air setup. That said, it’s a solid option for Windows and Linux users looking to add a bit of analog-style EQ flavor to their DAW without spending a dime.
Pult EQ is available in VST3 format for 64-bit Windows and Linux systems. You can download it directly from the developer’s GitHub page.
Download: Pult EQ
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Last Updated on July 29, 2025 by Tomislav Zlatic.
