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.


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, Effects Fans!

Yes, it is once again time to announce a new GT effect module.  Today we announce our new FET Drive module.

The GT FET Drive compares to the Wampler Plexi Drive.  It gives you three cascaded stages of tubey, high-gain JFET transistor drive.  It is meant to serve up the tone of a cranked Marshall Plexi, one of the iconic amp tones of all time.

It is a simple design, sporting the standard Volume, Gain, and Tone controls.  Bass Boost and Treble Boost switches give you a bit more control over the levels of treble and bass.  At low Gain settings you can get a not-quite-clean boost.  It also cleans up pretty well if you back off your guitar volume.  The treble and bass boosts have a significant impact in their range, including some "nearby mids".  With the Gain and Volume up, it has a nice feel.  Feedback is available in abundance, but the gain doesn't go over the top.  It stays in control without squealing and breaking down with normal input signal levels.  Also, with Gain and Volume cranked, you'll get a little bit of noise, as you would expect.  It is comparable to the noise level of a cranked Marshall.  Fully cranked it has perhaps a smidge less of the high-gain hair than some of our other Marshall-esque modules.  It is roughly comparable to our PlexiSSGTM-4512K68, and Prime Minister modules.

You can see the details about our FET Drive module at: FET Drive.  Or look for it in the Amp Sim Modules section under Products -> Modules -> Modules By Type.