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: Little Rock

Published: 24 March 2020 24 March 2020

 

   

Hello Effects Fans!

As you might guess, things are going a little slowly for us as everyone shifts into low gear for a while.  But that’s OK – low gear is the most powerful gear!  So we continue to move forward with developing new rack effect modules.  Today we announce the availability of our Little Rock phaser module.  The Little Rock compares to the EHX Small Stone Phaser, one of the most popular phasers of all time since its debut in 1974.  The simple controls and lush, liquid swirl have spiced up everything from jazz, blues, and country to pop, grunge, and rock. 

There have been numerous versions of the Small Stone phaser over the decades.  Our Little Rock compares most closely to v2 and v3, which are the preferred versions for most.  In addition to the simple Rate control and Color switch, we have half a dozen extra options to choose from to tailor it to your likings.

One random note about the different versions of the Small Stone.  Some of the circuit versions look much different from others.  All use several IC chips, but some also have a bunch of transistors in addition to the ICs.  Those extra parts must be doing something, right?  Yes, those transistors are important.  But if you notice carefully, the IC is different in the versions with and without the “extra” transistors.  The difference is that one IC version has those extra transistors already built into the chip.  That was the original early versions of the Small Stone, using CA3094 ICs.  The extra transistors are not needed with the CA3094 (or EHX part number EH1048).  If the other version of the chip is used, the CA3080, you must add those transistors since they aren’t built-in on the chip.  That makes the circuits look completely different, but they really aren’t that different at all.  It is unlikely your ears could tell the difference between the two IC/transistor configs.  The other significant difference between versions involves parts in the LFO section of the circuit.  The audio signal doesn’t go through the LFO, so those differences have no direct impact to the sound.  The LFO gives you the ability to control the Rate (Speed) of the phasing.  Of course, in our usual GT style, our boards are designed to work with either IC/transistor config.  The original CA3094 parts are difficult to find, but we try to keep them in stock.  You can request either IC.

You can see the details about our Little Rock at: Little Rock.  Or look for it in the Phaser Modules section under Products -> Modules -> Modules By Type.

It’s difficult to provide accurate time estimates right now, but we have a significant number of new modules winding their way through our R&D process.  The list includes some great effects you probably know and some others you may not have had a chance to try yet.  Watch here for more announcements coming as soon as we can get back to second or third gear!