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: InAGaddaDaFuzza

Published: 15 March 2021 15 March 2021

 

 

Hello, Effects Fans!

Today we announce our new InAGaddaDaFuzza module.  It compares to the Mosrite FUZZrite and the recently-released Catalinbread FUZZrite.  

There were a number of new fuzz pedals hitting the market in the 60's.  The Mosrite FUZZrite was one of them.  It's a little difficult to say with certainty who used what fuzz back then, but it seems fairly certain it was the fuzz used for Iron Butterfly's multi-platinum In-A-Gadda-Da-Vida.  It probably wasn't used by the Ventures, although it probably does give you the sound they were looking for at the time.  It probably was not used for Spirit In The Sky either, but it gives you a similar fuzz character - a little nasty and gnarly, a bit low-fi, maybe good for garage punk.  But with some fiddling about, you may find that fuzz sound heard on a number of 60's bands, particularly those in California at the time.  Recently, Catalinbread worked with the Moseley family of the original creators to build a reissue of the FUZZrite.  It compares well to the original.

The earliest versions of the FUZZrite used germanium transistors, while later versions were silicon.  You get a similar fuzz tone from both germanium and silicon transistors, or even a mixture of the two.  However, the germanium versions seem to sizzle and gate out, maybe just what you're looking for, maybe not.  In our opinion, silicon transistors are the way to go.  We have the same uncommon transistors used in the Catalinbread remake, or we can use something else if you have a preference.  Either way, it's a rude, in-yo-face, stick-it-to-the-man fuzz, a bit like the Gibson FZ-1 used by Keith for Satisfaction a few years before the Butterfly took wing.

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