Gerlt Technologies makes hundreds of customizable rack effects, at prices comparable to regular guitar pedals.  It's time to dump that pedal board and get Your Tone off the floor!


 What We Do

You know them as guitar pedals

We build them as rack effect modules you can customize to get Your Tone

Put several rack effect modules into a 3U rack enclosure

Connect power and audio on the back like guitar pedals, adding connections for remote switching

Add a remote footswitch unit to turn rack effects on and off

Add as many rack effect modules, enclosures, and third party products as you like. Plug in your guitar and amp. Rock it! It's that simple.


Quick Hits:

  • Check out our GT Effects Overview to see why we do this

  • Check out our Compares To charts to see the full list of effects we offer

  • Follow the menus from Products, to Modules, to Modules By Type to get a list of our effect types.  Select any effect type to get a list of all our effects of that type.  Select any effect to get full information including pricing.




It’s Pi Time!

Don’t forget that March 14 is National Pi Day, a geeky celebration of our favorite irrational number, which is approximately 3.14159265.  In case you didn’t know, in audio circuit design we use pi all the time to calculate frequency cut-off points for many applications including filters, tone controls, noise reduction, and pretty much anything else that impacts which frequencies in a circuit are affected as part of the effect, perhaps one of the most fundamental aspects of audio circuit design.  Most places where you see a capacitor in an audio circuit, a calculation involving pi was used to select its size.  Pi Day – we’re all in!  Of course, here in Dallas we often use 3.1416 for pi in our calculations, since things are a little bigger here in Texas...

Naturally, Pi Day is a great excuse to begin designing your custom GT rack effects solution around the best-known fuzz effect ever, available as the GT Pi module.  We offer many of the known EHX Big Muff Pi variants and derivatives, along with the ability to design your own Pi by choosing custom components and features. 

You can find all the details about our Pi module, including the recently-released Fire Pi, at Pi.  If you can’t find the type of Pi you’re looking for, just let us know and we’ll likely be able to offer a custom configuration to meet your needs.