Gerlt Technologies makes more than 235 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.


Explore the Gerlt Technologies (GT) Site

  • GT Effects

This section of our site describes our product offerings in general terms.  In it you will find info such as:

What are the benefits of rack effects?  What are the specific benefits of Gerlt Technologies rack effects?

GT rack effects vs guitar pedals - How do they compare?

What are GT custom rack effects?  What types of customizations are offered?

How does GT rack effects power work?

How does GT rack effect switching work?

How does GT rack effect cabling work?

How is GT rack effect maintenance minimized and made easy?

How do you install and uninstall GT rack effects?

How does GT keep rack effect pricing low?

  • Products

Our products consist of Enclosures, Footswitches, and Modules that you select to create your complete rack effects setup.  A number of the common parts have been gathered together into Startup Bundles, with discounted pricing. 

As you navigate the menus, you will find full descriptions, configurations, options, pricing, and other details for all of our products.

  • Purchase

Since our products are all configured and built-to-order, we don't have a shopping cart approach to placing orders.  The process is much more consultative. 

  • More Info

This section includes extra info that may be helpful when you are selecting or configuring our products.  A little rough around the edges and still under construction

  • Support

This section includes all of our Customer Support policies, info about using our products, contact information, troubleshooting guides, etc.  Again, a little rough around the edges and still under construction.




Hello, Everyone - We're back! Welcome to a brand new decade! We’re kicking it off with a new module announcement today.

For some reason, there are a few great Maxon effects that players in the USA may have missed. The Maxon DS-830 Distortion Master is one of them. Our GT-830 compares to this largely undiscovered pedal. The individual sections of the circuit are generally unremarkable in design, including input and output buffers and silicon diodes in both hard and soft clipping configurations. But there is a unique active tone stack providing independent Bass and Treble controls with a wide range of effect. The overall tone purposely highlights the low end, and tends to be a little warm and dark, especially when the Gain is low. It is meant to provide a solid bottom and some fat. The Gain provides a wide range, from almost clean, through overdrive, and into distortion. With the GT More Gain option, the Gain range extends well into hair metal tones, with plenty of touch, feedback, and harmonics. The Gain cleans up pretty well with the guitar volume, but don’t expect pristine cleans at any settings. The gain is enough to hit the front end of your amp or downstream pedals pretty hard, enabling amp break-up or meltdown, should you choose it. The character of the gain is somewhat Marshall-like, although clipping diode selection can change it up.

Since it is designed to fatten up the tone and provide a nice tight bottom, the circuit can sound dark, particularly with humbuckers. The wide range of active tone control will counter that, but even the tone stack is purposely skewed a little to provide more control over the lows than highs. The stock silicon clipping diodes are good, but red LEDs and no clipping diodes at all both yield brighter tones, although the character of the distortion also changes. In other words, clipping options are worth considering, maybe even more so for humbuckers than single coils. If you already have a bass-heavy tone, this may give you some good shaping options or push you into the Dark Side. If your tone is a bit thin or bright, this can give you some nice bottom end to fill things out a bit. Fat-bottom tone makes the rockin’ world go ‘round!

Check it out:  GT-830