Hello Effects Fans!

It seems like time for another update, but not much has changed.  The supply chain problems continue to make parts unavailable and there is no particularly believable plan or timeframe I know of for these problems to be resolved anytime soon.  Perhaps early next year?  Perhaps not? 

We lost another supplier that has been supplying boards to us for several years.  Luckily, there are other suppliers that can make our boards and we’re in the process of switching to one of them.  We’ll have to go through a testing and validation process with the new supplier to make sure there are no technical glitches in getting our specs to them and that their results will meet our quality standards.  This takes some time, but we should have that resolved before parts become available.

I’m concerned that more parts may become unavailable if the supply chain problems continue.  Available stocks are being depleted.  I’m also concerned that demand for dwindling supplies, as well as the increasing cost of energy and transportation, along with high inflation, will force us to have to raise prices to cover the increased costs.  Shipping costs have always been an issue, but are now often higher than the cost of the items being shipped.  That represents a significant overall cost increase.  If you’ve been following us, you know that providing the best selection of the best rack effects is our mission.  But you will also have seen our frequent use of the word “affordable” in our objective.  It’s not difficult to make expensive things that few can afford.  We want our rack effects to cost no more than pedals, less when possible.  We’re nearly there and will do everything we can to avoid going backwards.

While the outlook is not what I would like, it’s not all doom and gloom!  I don’t idle well.  I run best near the red line!  To that end, I dug through the R&D backlog and knocked out another 10 – 20 new module configurations.  I know I shouldn’t be doing that right now, but who can sit around and do nothing for this long?  Not me!  Many of these are what you might call “new classics”.  If you consider the “classics” as being those ground-breaking effects of the 60’s and 70’s, these new classics are mostly from the 80’s, 90’s, and early 2000’s.  There were a lot of great effects released in that timeframe and these will make very nice additions to some thin spots in our offering.  With these new modules, the number of effects we “compare to” in our offering will be over 350.  That is *a lot* of effects to choose from, all in rack format and built by hand here in Dallas to suit your needs.

That’s it for now.  I probably won’t send another update until after the holidays, when hopefully parts will become available and there will be more interesting news to report.  Until then, all the best to you and yours through the upcoming holiday season, and thank you for your continued interest in the world’s best selection of the best and most affordable rack effects available!  


Bill Gerlt

President, Gerlt Technologies

Dallas, Texas

14 November, 2021



Gerlt Technologies makes hundreds of customizable rack effects, at prices comparable to regular 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!

If you like chorus effects, then you are probably well aware of the famous Roland SDD-320 Dimension D rack chorus.  When it was in production back in the 80’s, it seemed almost everyone used it live and/or in the studio.  Many are still in use today, although they cost considerably more than most pedals and sometimes need some service to return them to top operating form.  In 1985, Boss released the Dimension C DC-2 Chorus pedal.  It was very similar in design and sound, but came in the normal Boss pedal format – sort of the “little brother” to the rack version of the circuit.  Used ones in good shape fetch stiff prices.  They went out of production in 1989, but have recently been revived in the Boss Waza pedal line.  Today we announce our Stereo Chorus module, which compares to these great chorus effects, most closely to the Boss Dimension C DC-2 pedal.

Both the SDD-320 and DC-2 are simple to operate.  They have push-button settings.  The DC-2 pedal had four of them.  No knobs, no options – just 4 well-chosen presets and an on/off stomp switch.  The cool thing about these chorus units is that they are “motionless”.  If you are used to more common chorus effects, you know that changing up the standard Rate and Depth controls will give you variations in the “wobble”, from subtle thickening to wild and spacey “seasick” motion.  Motionless chorus doesn’t do that.  It operates by having two separate delay channels out of phase with each other.  The effect is much more subtle, but very pleasing.  Pleasing enough to be an “always on” effect.  It’s almost like two chorus circuits in one effect, making for a complex and (sorry!) more expensive circuit to build.  At first you may think the presets aren’t working if you haven’t used a motionless chorus before.  But listening more carefully, you’ll “get it”.  Some think it is the ultimate in chorus, avoiding the over-the-top settings.  All presets are extremely usable.  If you like the bigger and wobblier chorus, or a more Leslie-like rotary speaker feel, there’s nothing wrong with that, but this may not be what you want.  If you want that subtler, always-on, thickness and depth, this design delivers like no other. 

Our implementation stays very close to the DC-2 design, using the same MN3207/MN3102 BBB/clock chip pairs.  The elaborate filtering and companding in the circuit design can result in a relatively low-noise chorus effect.  We use toggle switches instead of push buttons, giving you 6 presets instead of 4, with 4 of them being identical to the originals.  We also offer up standard Rate and Depth controls instead of the toggles if you prefer to dial in your own settings.  Or if you can't decide, you can have both the toggles and the controls and switch between them.  The circuit has a number of transistors and diodes in the control portion of the circuit that are not in the audio path.  They aren’t special in any way, but some of them are now very expensive and difficult to find.  We use better and more affordable parts for those instead, with no impact at all on the tone of the circuit.

Like the DC-2 pedal, you can run the module in mono or stereo mode.  Some feel that stereo mode makes the motionless chorus seem bigger, but you still won’t get anywhere near the wobble or separation of other chorus designs.  That’s just not what this chorus does, thankfully!  Not only is it good to have a great variety of effect choices, it’s good to have great choices!

You can see the details about our Stereo Chorus at: Stereo Chorus.  Or look for it in our list of modules in the Chorus section, along with our great VibraChorus configurations, Small Chorus, and Black Pearl chorus modules. 

BTW... For those of you who have used Search on the Home page of our website, you’ll find the results are displayed much better now.  They used to be displayed at the bottom of the page, which made them difficult to find.  Now they are at the top, easily seen, like they should be.