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!


I hope all is going well for you!

I’m back in the USA now, after a lengthy time away.  I’ve taken a bit of time to survey the post-post-COVID business climate and think about our next steps.   As is often the case, there are conflicting signals to sort through.  I won’t bore you with all the details.  The result is that I think the time is still not right to resume normal operations. 

One of the primary reasons is personal.  About a year ago I jumped into a really fun, non-work opportunity that took me out of the USA for most of the past year.  I will be out of the country again most of the coming year before things settle down to a new normal for me.  It’s a lot of fun, but wasn’t really part of any plan I had, so I need to adjust my plans.  I’m not able to operate Gerlt Technologies while I’m away, so the shutdown will continue for probably another year due to that until I can get my personal and professional plans realigned. 

Beyond that, the post- post-COVID situation is still unsettled.  I expected a period of ripple effects from COVID shutdowns, supply chain problems, and other world economic and political events that impact our business.  I’m starting to think those ripples aren’t going to die away and return us to something similar to the world we knew before 2020.  If some of those changes become permanent, much work and difficult decisions may be necessary.  At the moment, the parts I couldn’t obtain are now available, but some others are now unavailable.  Costs are both up and down for components, but shipping costs are now a large and growing portion of component cost and would probably force a general price increase, an action I’m very reluctant to take.  In a market that is difficult to read, it is difficult to justify additional investment.  As long as we remain cautious, we can continue to wait for time and change to bring about a better situation, even if it takes a while.

In the meantime, I will have some time to work on the less exciting “internal stuff” that is necessary to the process of building and delivering our products.  Our internal processes are a bit messy as a result of rapid product line growth, shutdown of some suppliers and vendors, and other reasons.  If we were to resume taking orders, these problems would quickly tangle up our operations.  So while we have “quiet time”, I’ll work to clean up some of those issues so we’ll be better positioned for the future.

I hope to also be doing some of the fun work, such as completing some new products, or at least moving them further along, and possibly some marketing events.  So keep an eye on us while we work through some of the issues that are holding us up at present.  I’m not sure exactly when I’ll return from my next sojourn, but it will likely be about this time next year when I pop up and take another look around to see how it looks.

Until next time,

Bill Gerlt

President, Gerlt Technologies

Dallas, Texas

21 June, 2023




Hello, Effects Fans!

Today we announce our new Python compressor module.  The Python compares to the MIJ Boss CS-2 Compression Sustainer pedal.  The Boss CS-2 Compression Sustainer pedal is a classic among compressor pedals.  The controls are simple and the overall compression and sustain are considered more "natural" or "musical sounding" than many other compressors.  The circuit is similar to the older Ross and Dynacomp circuits, but differs in several ways to make it unique.  The CS-2 pedals were built from 1981 to 1986.  The CS-1 which came before and the CS-3 and others that came later are different.  Fans of the CS-2 still seek out the original vintage pedals, which have continued to be used by top artists for decades.

Compressors are sometimes described as the effect you shouldn't be able to hear when they are used correctly.  Perhaps compressors would be better described as the effect that makes your playing sound more like you intended it to sound.  Of course, guitarists have a variety of experiences and opinions about compression in general, as well as specific compressors.  The Boss CS-2 is no exception.  Some think it is the best compressor ever, others aren't so impressed.  We have a theory that compression is more specific to your setup and playing style than other effects.  If you have a relatively quiet rig and relatively smooth picking and strumming technique, a compressor may be more subtle.  But if you have a bit of noise, the noise can be made worse.  Or if you have a very dynamic picking/strumming style, you may not think the compression is at all subtle.  Perhaps the less you need it, the better it works...?

The one thing we know for sure is that the debate will continue.  To our ears, and with our setup and playing style, the Python is subtle, adding a very warm, smooth, and pleasant polish to our tone.  We can't tell it from our original MIJ CS-2 pedal.  It seems like both the highs and lows are very lightly trimmed to help smooth the tone.  The Attack, Sustain, and Level controls are all familiar to compressor users.  The Attack controls how quickly the compression begins.  Sustain controls how long it acts.  Level is a basic volume control.  If you turn up the Level and/or Sustain to the point where you are boosting the signal, then there is some increased noise.  But if you keep Level and Sustain closer to noon, there is little to no added noise.  The full range of Attack is reasonably subtle for us, but you may well have a different experience.  Also, as with most compressors, if you increase the Level, you may get some clipping distortion.  If you like the CS-2, but you find it clips a bit much with your setup, you might want to try our option to run it at 12V for a bit more headroom.  Once you try it, It's easy to see why David Gilmour uses the CS-2 to feed some of his amazing, smooth, and sophisticated fuzz and drive tones.

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