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: VibraThrob

Published: 27 June 2025 27 June 2025

 

   

Hello, Effects Fans!

Today we announce our new VibraThrob vibrato module.  But if you look closely, you'll see a switch labeled "Phasing".  Toggle that switch and your vibrato becomes a 2-stage phaser.  Yes, a two-fer!  To turn vibrato into phaser, you add back in the original dry signal and combine it with the wet signal.  The Throb knob lets you control the amount of dry signal in the phaser mix.  It goes from almost no dry signal to almost all dry signal.  With only two stages, you won't get the over-the-top craziness you can find with effects that have more stages.  While this circuit doesn't "compare to" any commercial pedals, it is probably most similar to the MXR P-45 phaser when you turn on the phasing.  Both the phaser and vibrato go from mild to chunky, medium levels of effect, with pretty much the entire range of adjustment yielding usable tones.  The Speed and Depth knobs behave as you would expect.  

This is a very pleasant vibrato/phaser.  Plug in some clean tones and you can lose an entire afternoon before you realize it.  Mix it with other effects, and you'll probably lose the evening, too.  While the effect is more mild than wild, you'll find some pleasing Leslie, Univibe, and other familiar sounds lurking in there, just a slight adjustment away.  Of course, with only two stages, you won't get the heavy version of those sounds.  Instead, you get something a bit lighter, more useful in more situations, something that can be on nearly all the time to put some nice movement into your tone.  And, BTW, it has much less noise than most vibrato or phaser effects, with hardly any noise at all even on the maximum settings.  That makes it work extra-well with clean tones, giving you a little somethin'-somethin' to freshen up your pop, rock, blues, or country licks when things start getting a little stale.  Try it on The Dark Side of the Moon...

Visit the VibraThrob page for more details or look for it in the Vibrato Modules section under Products -> Modules -> Modules By Type.