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


Happy Holidays, Everyone!

We want to extend our best wishes to all our friends and family for a safe and happy holiday season. 2019 has been a lot of fun and we’re looking forward to even more in 2020!

We’re going to be on “holiday time” until January, so expect delays in Customer Support response times until then.

This time of the year tends to get hectic with holiday parties, social and family events, and the inevitable year-end crunch to complete 2019 goals. That’s certainly true here at GT. The past couple of weeks have been very productive. We’ve had several new modules almost ready for some time, and were finally able finish them up. You probably already saw the announcements for our Warthog and Black Pearl modules. We also finished up an overdrive/distortion, a flanger, another chorus, and a phaser. We have an original design bass module that we just couldn’t quite get finished before the holidays, so it is slipping into Q1. Keep an eye on our Facebook page for announcements about all these new modules, beginning in January.

Between soldering sessions, we were able to get three more new module designs ready for board manufacturing. They include a Swedish-style metal distortion module in a couple of different configurations, a sweet pre-amp tone enhancer that might become one of your “always on” effects, and a very good flanger. We also dug up an old vintage drive pedal that needs to be revived. Not sure why we haven’t built this one before, it’s great. We should have the design completed and boards ready in Q1 along with these other three.

Q1 and Q2 will likely see a shift of focus from new modules to working on our website. With around 230 different modules comparing to some 260+ pedals, and another 8-10 on the way, we think we can take a short break. We’ve needed to improve the website for some time, but seem to always find something, well, more fun to do. I think this time we’ll actually do it. There is some missing and messy content that needs attention. We’re also hoping to at least get a start on demo videos. As you might imagine, with some 230 modules, getting demo videos together is a gigantic task. But the job never started is the one that takes the longest to complete, so time to get crackin’!

That’s where we’re headed for the next weeks and months. We’ll provide updates along the way.