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: Virtuoso Phaser

Published: 14 September 2019 14 September 2019

 

The Maestro MP-1 phaser was not only one of the first phasers available, it was one of the first pedals of any type, becoming available around 1971. Although information about recording details from back then can be a bit sketchy, the MP-1 may well be the phaser used on early Rush and Led Zeppelin albums, perhaps some classic outlaw country tracks, and, later, Smashing Pumpkins. It is a pleasing and versatile phaser that has stood the test of time, although original vintage units in good working order are getting a bit pricey.

Our Virtuoso Phaser compares to the Maestro MP-1 and delivers some great phaser tones, from slow and subtle movement to fast and deep spaciness. It has only two controls for Speed and “Balls”, just like the original. There is also an internal Depth trim pot that provides some additional range of tones, enough useful range that we may make it an external control option in the future. If you are trying to nail early 70’s phaser tones, the Virtuoso may help get you there. It’s also a great effect to get in a rack version, as the original pedal is pretty big, takes up a lot of pedalboard space, and runs only on batteries.

Check it out at Virtuoso Phaser

Or, better yet, check it out in person at our booth at the Amigo Guitar Show in Ft Worth on Oct 5 and Oct 6. We’ll be there with around 200 of our modules, including our newest releases, for you to try out. Hope to see ya there!