Gerlt Technologies makes hundreds of customizable rack effects, at prices comparable to 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.

 

 

Hello Effects Fans!

Today the message is unpleasant.  After figuring how to deal with some of our government’s policy decisions for the past several years, I must finally admit defeat.  It is not feasible to continue operations with the latest round of policy changes.  As recently as a few days ago, I thought it might work out.  Then I was hit with business-ending tariff charges, with more to come.  To be clear, it isn’t just these new Trump tariffs that have beaten me.  Biden-era tariff changes and policies were also difficult to survive.  The cumulative effect is too much.  

As an entrepreneur I take calculated and managed risks.  Sometimes it works out, and sometimes I seem to be shooting at my own feet.  But I can’t survive an economic nuking from my own government.  It’s not just a political disagreement, or differing opinions, theories, or expectations.  It’s a matter of undisputed facts, real dollars.  Gerlt Technologies’ “Game Over” criteria were met this week as those facts became crystal-clear.  I don’t like politics and refuse to take part in it, so I’ll just leave it at that.

Gerlt Technologies will no longer take new orders for our effects.  We do still have our popular 3U Pedal Racks available until our inventory is depleted.  New tariffs on metals will make them too expensive to restock, so get ‘em while we’ve got ‘em!  I have a handful of new modules that I’ll be completing soon.  I’ll still announce them when they are finished, just ‘cause.  We were already contemplating thinning out some of our guitars, amps, pedals, and maybe some components and other gear that have somehow quietly filled up all our available space over the past several years.  We may add some listings for those on the site or perhaps on Reverb in the coming months.  Keep an eye on us if you are interested in some lightly used gear in great condition.  I expect and plan this shutdown to be permanent, but maybe I’ll pop up and take a look around in a couple of years if enough major changes take place in government policy after the mid-term elections.   

It has been a lot of fun!  I enjoyed meeting thousands of you along the way – always the best part of any adventure.  Thank you all, and all the best to you and yours!

Bill Gerlt

President, Gerlt Technologies

26 August, 2025

 

New Module Configurations: JP4 Pi and Nitro Pi

Published: 03 February 2021 03 February 2021

 

   

Hello, Effects Fans!

Today we announce two new configurations of our Pi module, which compares to the plethora of Big Muff Pi pedals and derivatives.  Our new JP4 and Nitro configurations compare to different versions of the excellent Skreddy Top Fuel pedal.  The Top Fuel seems to have gone through revisions over time.  Our JP4 config compares to an early version, while the Nitro config compares to a more current version.  Of course, they are both pretty similar to each other.  The Nitro seems to be a touch brighter, with a little better articulation and string definition, a nice tweak to a good design.  Skreddy fuzzes are among the very best available, so neither version will disappoint.  It’s more a matter of preferences, if you happen to have heard multiple Top Fuel pedals and developed a liking for one over the other.

The circuit is definitely in the range of fuzzes found in the Big Muff Pi conglomeration of pedals.  The focus is on the mids, with the lows trimmed back a bit to keep the fuzz from getting too fuzzy.  MOSFET clipping contributes to giving it a touch more “tube character” than the usual silicon clipping.  The result is a high-gain fuzz with better articulation and control over the mids to help you cut through better than the classic mid-scoop found in many of these circuits.

You can see the details about our Pi module and the JP4 and Nitro configurations at: Pi.  Or look for it in the Fuzz Modules section under Products -> Modules -> Modules By Type.