True Iron

6 vintage outboard transformers. Power your listeners can feel.

Buy now Try the free demo

$37.00 USD

The pinnacle of analog transformer processing at the twist of a knob.

True Iron packs 6 definitive line transformers from some of audio's most mythical hardware units - the UTC 108 X, Malotki E4M – 4001B, Western Electric 111C, Haufe V178, Marinair LO1166/A, and the UTC O-12.

Get the essential secret sauce plugin that even analog purists swear by.

Try True Iron for free

Ross Hogarth

Grammy-winning producer/engineer (Van Halen, Keb’ Mo’, Dweezil Zappa, The Doobie Brothers)

The True Iron plugin is a game changer – having this indispensable sound on recall in the convenience of a DAW. This is a plugin that just makes everything sound better! With the ability to add extra harmonic distortion on the fly, and blend wet and dry signal to taste, it opens up even more possibilities on the fly that would be tedious or impractical to do with hardware.

Dave Pensado

Grammy-winning mixer (Michael Jackson, Kelly Clarkson, Beyonce, Elton John, Christina Aguilera)

I use True Iron on everything I mix. EVERYTHING! It always adds that finishing touch and elevates my mixes to the next level. Shane and Devin have created a true classic!

Ken Lewis

Grammy-winning mixer/producer (Taylor Swift, BTS, Bruno Mars, Khalil Fong, Drake)

True Iron was on my final mixbus of the upcoming Taj Farrant single. That thing is a great vibe box!

A musical transformation that matters.

Here's what True Iron can do for your productions:

✔️ Add analog warmth, heft, and vibe from some of audio's most sought-after hardware transformers (gel your mixes organically, enhance depth + stereo width for more impactful releases)

✔️ Get 6 industry-acclaimed transformer models in one plugin - the UTC 108 X, Malotki E4M – 4001B, Western Electric 111C, Haufe V178, Marinair LO1166/A, and the UTC O-12

✔️ 100% backed and used by pro heavyweights such as Dave Pensado, Ross Hogarth, F. Reid Shippen, Pete Lyman, Mark Linett, Chris Shaw, Bruce Sugar, Ken Lewis + countless others

✔️ Smooth out digital harshness with natural transformer saturation that ranges from subtle to crushed (make almost any track or bus sound better instantly with minimal fuss)

✔️ Drive the Crush knob to boost input and add even more rich analog saturation to your tracks (and easily take things too far for more creative uses)

Power you can feel.

You can also:

✔️ Fine-tune your processing amount with the Strength knob and mix control (get the parallel blend exactly where you want with zero compromise)

✔️ Utilize the adjustable oversampling up to 32x both online and offline

✔️ Add multiple instances across sessions with super high track counts (True Iron is one of the most CPU-friendly plugins on the market, period)

✔️ Resizable window + alternate GUI option – choose from black or green themes and expand to fit your preferred window size

✔️ Enjoy a 100% perpetual license for multiple devices, no iLok authorization required, no dinosaur dongle insanity required, and ZERO subscription fees EVER

F. Reid Shippen

Grammy-winning producer/engineer (Dierks Bentley, Kelsea Ballerini, Lady A, Backstreet Boys, Keith Urban, Little Big Town)

Crazy and over the top is easy to find in plugins nowadays. What’s nearly impossible is complex, subtle distortion and harmonics that enhance the sound without destroying the character. Until now. True Iron is the first time I’ve heard this magic. It’s so incredibly useful – it will change the way you work.

Mark Linett

Grammy-winning producer/engineer (Beach Boys, Brian Wilson, Michael McDonald, Randy Newman, Jane's Addiction, Stevie Nicks)

Just got True Iron and have been using it on a number of live broadcast shows from the iHeartRadio Theater in LA, as well as mixes for a new Beach Boys project. Using mostly the 108X and 111C on drums, bass, and guitars. A new favorite for adding color to instruments and the mix buss!

Pete Lyman

Grammy-nominated mastering engineer, Infrasonic Sound (Chris Stapleton, Tom Waits, Zac Brown Band)

True Iron has a solid transformer sound. Loving what it does to the low end! Sounds like the real deal and not an effect. This will be a go-to tool in my plugin arsenal.

True Iron - breathe new life into your music.

Buy now Try the free demo

What makes Kazrog one of the biggest no-brainer choices in all of audio?

True Iron

$37.00 USD Sale Save $22.99 USD
True Iron

True Iron

$37.00 USD Sale Save $22.99 USD
Version Full

Get the one-and-only modern classic that even analog purists rave about. Add analog warmth, heft, and vibe to your productions and make a true impact with your next release.

True Iron adds 6 definitive line transformers from some of audio's most mythical hardware units to your mixing arsenal. Your musical myth starts here!


  • macOS 10.13.x or higher required
  • VST, AU, AAX (64 bit) compatible host required
  • Pro Tools 12 or higher required for AAX version
  • Apple M1 (or Intel i5 "Ivy Bridge") CPU or newer strongly recommended
  • All Kazrog plugins are Universal Binary 2 (native support for both Apple Silicon and Intel architecture.)


  • Windows 10 or higher strongly recommended
  • VST or AAX (64 bit) compatible host required
  • Pro Tools 12 or higher required for AAX version
  • Intel i5 "Ivy Bridge" CPU or better strongly recommended
  • 100% perpetual license for multiple devices
  • no iLok authorization required
  • ZERO subscription fees EVER

Random silent output every so often, followed by a gentle fade. Preset save disabled. Demos are time-unlimited but have the above limitations. Purchasing the plugin removes these restrictions.

Customer Reviews

Based on 652 reviews
Randy R.
True Iron

Seems to provide a good overall grounding to the music, making it feel super supportive to other plugins as well as the DAW. A solid performer.

Simple but great!

Does what it says on the box! There aren't many plugins that capture true transformer goodness...

Transparent M.
Very nicely done

I was pleasantly surprised with both the convincing nature of this plugin, and the restraint that Kazrog had in keeping the amount of colour within the zone of real hardware transformers instead of making it more of an “effect”. In other words, expect subtlety, but the right kind of it.




True Iron