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 PTEq-X by Ignite Amps is a Virtual Effect Audio Plugin. It functions as a VST Plugin, an Audio Units Plugin and a VST 3 Plugin.
Product PTEq-X
Developer Ignite Amps
Price (MSRP)
Type / Tags Tube EQEqualizer/PreampPultec
Plug-in, App & Soundware Format(s)
Operating System Availability
Download Released
  Download Released
System Requirements
Windows 7/8/10 (32/64-bit)
Intel Pentium 4 or AMD Athlon XP
  Download Released
System Requirements
OS X 10.7
Intel processor with SSE2 instructions support
Miscellaneous Information
Copy ProtectionNone

PTEq-X is a digital emulation of 3 famous vintage passive program equalizers.

It has been developed to have all the characteristics of the original hardware, plus some circuit improvements and additional features to increase its versatility.
Every single component on the signal path of the real analog circuit has been taken into account and modeled in the best possible way to match the original sound, keeping an eye on CPU performance and real-time playability at the same time.
PTEq-X is meant to be used as a studio equalizer for tracking, mixing and mastering inside hosts capable of VST or AU Plug-Ins support.

Main Features:

  • Three different equalization modules with perfectly analog curve response even at highest frequencies.
  • Ignite Amps 3rd generation triode stage analog modeling for 4 different tube types.
  • Additional selectable frequencies for the PEQ1A model, compared to the original design.
  • Refined filters frequency precision for the MQ5 and HL3C models, compared to the original design.
  • Switchable equalizers and tube stage modeling for better CPU usage management.
  • Switchable linear phase oversampling for aliasing reduction.
  • Global input / output level controls.
  • Mono / Stereo processing support.
  • Double precision (64-bit) floating point processing.
  • Fully automatable controls.
  • Ignite Amps proprietary preset management system with bank file import/export functions.
Latest User Reviews Average user rating of 5.00 from 4 reviews

Reviewed By brett.a.merrill
September 15, 2019

WOW - I am absolutely blown away by this! I first came to understand what a Pultec is when I watched an engineer mix a Queen track on an SSL console. When he flipped the switch on the Pultec's there was this moment of "Boom!!! - there's that elusive sound I've been trying to figure out". Since then I've been looking and looking for a software emulation that "does the thing". The only emulation I could find that "Does the thing" (more on "the thing" in a bit) was Apogee's EQP-1A. It was lush, it was liquid, it was like sex on the Master Buss and it was $300 that I couldn't fork out because of payment gateway problems. What to do?

I tried everything, I tried UAD and Acoustica and Waves and nothing. Nothing had "that sound" and nothing "did the thing" until I found this little beauty. I was surprised that a free plugin emulation was so good.

It does the low-end mix trick! Woot - finally! Hear the bass just ooze out of the speakers. Fat, round, and CLEAN (choose 30 for the Lows, attenuate the Lows to tase - about 1, then boost the lows to taste, about 2 and make sure the Bandwidth is set to 7 - this one is super sensitive in comparison to the Apogee version).

It gives you that sexy, lush, 3D "liquid sound" (switch in the tube emulation). My face melted listening to it! (Mix at 96kHz with 2X oversampling or 192kHz to REALLY hear that sexy tube go to work)

It's really good at everything else Pultec's are famous for but for me getting that 3D liquid lushness and that fat kick-*ss bass is the most important thing. I am still going to buy the Apogee (the best psychedelic sound is multi-layered) but I am so happy that I found this! It took me years to figure out what on earth a Pultec was, what it did, and most importantly how it's supposed to sound in actuality. I'm glad it didn't take me that long to find this after I understood what I was looking for.

Kudos to the developers - it's clear that they absolutely know quality both in terms of hardware and software (seriously - 64-bit floating point and oversampling in a free plugin...no words can express). Much love and respect. Thank you.

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Reviewed By buing
December 2, 2018

A free plugin which punch into the face of paid plugins.

You will not need to buy Pultec style EQ anymore.

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Reviewed By Lugia909
September 10, 2018

Having used the real thing many years ago, I can say pretty safely that this behaves the way it should. It's a 'broad brush' approach to EQ; those expecting to find a tool to make wild, radical changes might want to look elsewhere. But for those who want a device that reliably 'nices up' signals without imparting anything extreme, this is your go-to. Hell, it's my go-to, actually...I find it winds up on my master bus all the time as an 'I don't even need to think twice'-type of choice for zeroing-in overall spectral content. It also has a few frequency settings not present on most other Pultec emulators, which is a big plus. You can't go wrong here.

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Reviewed By nullfactor
August 7, 2018

A great EQ for broad, non-surgical applications. I find PTEq-X to be a useful tool in mixing guitars and for vocal treatments, as well as a handy addition to my mastering chain. If you're looking for an EQ that allows you to cut or boost exact frequencies, you may want to look elsewhere. But, for adding growl to your heavy guitars, or removing nasally frequencies from a vocal performance, PTEq-X is your go-to.

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Discussion: Active
21 February 2016 at 11:38am

Excited to try it out, as Ignite Amps are cool guys. :)

22 February 2016 at 7:56am

can't tame it so far)

6 May 2016 at 11:59am

Love it! It's a really fantastic piece of software except for randomly muting some tracks. Disabling/enabling solves that until it randomly mutes the track again. As this happened on a kick track first I assumed it was a peaking problem but no - completely random and not reproducable. Can work for hours and suddenly the kick is missing from the track..so I've got to switch off/on. But I wouldn't bother doing this if it wouldn't sound so amazing.

Wild Hades
Wild Hades
12 December 2017 at 8:59am

Fixed in version 1.1.0.

27 May 2017 at 7:31am

Best free TUBE EQ VST I have ever come across. Free Samples and Resources, Tips for Music Producers Click Here


21 August 2017 at 9:37am

It's a great plugin. But needs some bug fixes.

The site still says hacked btw.

Back to the plugin, when i use this in ableton and reopen a project, some sounds are completely panned to the right or i get a huge amount of destortion. By swinging of the tube or fiddle around with the bandwidth knob fixes it. But when u have running several instances of this plugin its a mess to see which one of this plugin causes the problem.

Will there be a update of this one? It's by far the best pultec i ran into (free that is)

Can you please answer developer?

Wild Hades
Wild Hades
12 December 2017 at 8:59am

Fixed in version 1.1.0.

1 March 2019 at 6:47pm

Please, add the change of routing of the 3 modules.

This is very important for a lot of uses.

26 December 2018 at 1:15am

Crashes both Reason 10 and Logic 9. :(.

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Average user rating of 5.00 from 4 reviews

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