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!

In my last update I was excited after finding some small quantities of critical components that are needed to build our effects. I hoped that to be a sign that perhaps some of our supply chain problems were easing. But it seems those were just one-off lucky finds. I haven’t found any more since then. On top of all the other problems, we now have the ripple effect of the conflict in the Ukraine, which has caused even more parts to become unavailable and/or very expensive.

It’s one thing to be optimistic, but another to be unrealistic. This is no longer a time for simple optimism. It is a time for handling unpleasant realities. Our reality is that it seems very unlikely that enough positive changes will occur quickly enough for us to re-open in 2022. While the corporation is in a good position to weather a continued lengthy shutdown, the people are not able to. We need to take some time to go do “other stuff” for a while.

We still have several new modules to announce. The work is complete on almost all of them, so I’ll try to get those announcements out in April and May. Other than that, I’m afraid it is going to be pretty quiet here until we are able to reliably source parts at reasonable prices again. I probably won’t have another update until late summer or into autumn.

The good news is that Gerlt Technologies is still here and alive. We haven’t “lost” anything. We still have the largest selection of rack effects available, getting close to 400. Our effects still sound great. And we still want to make them available to you. We’re just going to have to continue our break for a while until the business and economic conditions improve to the point that we can provide outstanding products and support at affordable prices.

I apologize for the continued delay and will do everything I can to get us going again as soon as it becomes feasible.



Bill Gerlt

President, Gerlt Technologies

Dallas, Texas

11 April, 2022


Hello, Effects Fans!

I hope 2020 is off to a great start for you!  We’re certainly going full speed, but I wanted to take a few minutes to let you know what we’re up to.

Through January and February, you’ll see new module announcements about every couple of weeks.  We have phaser, flanger, chorus, and cool bass modules coming in that timeframe.  We also have another four modules about halfway through the R&D process.  We should have boards for them later this month.  We expect those module releases will follow in March and April.  They will bring our total number of module configurations to somewhere around 235+, comparing to some 265+ guitar pedals you may know of.  We’ve been burning the midnight oil for the past several years to make sure that we have a wide selection of effects and customizations so that you can find Your Tone in our rack modules.  Making new modules available is a lot of fun, and we expect that will always continue.  We still have a list of many dozens of additional modules that we want to develop, so we aren’t in danger of running out of new ideas anytime soon.  

Since we now have some reasonable depth and breadth to our module offering, we need to take a breather and spend some time on “other stuff” that seems to always be necessary in running a business.  We also have a long list of these items we need to address, but they tend to not be much fun and rarely get the attention they deserve.  One of those is our website.  It was put together pretty quickly, and was never finished.  Of course, websites are never finished, but even our initial website rollout wasn’t completed.  We have some content that was never published, as well as some content that needs some updates and polish.  And as you have probably noticed, we don’t have any demo videos.  I have just kicked off a major effort to address some of these issues.  Over the next 3 months or so this is going to be our main activity.  We’re still working out detailed plans and scope, but changes should start trickling out later in January.  

This temporary shift of focus won’t be as obvious now as it will be when we head into summer.  Since we will be stealing R&D time for the website work, our queue of new modules in R&D is almost certainly going to run dry for a little while.  I anticipate we’ll have fewer new module announcements for a while, beginning sometime in April and going into the summer.  But once the website project begins to wind down, we’ll start filling up the R&D queue again.

That’s The Plan.  We hope you’ll join us as we continue to make available affordable, custom rack effects with killer tone!


Bill Gerlt

President, Gerlt Technologies

Dallas, Texas