Hello Effects Fans!

It has been a while since my Jan 31 update, in which I announced that we stopped taking new orders for a while until the COVID situation and the pieces of the economy that impact us improve.  We’re hoping that the ongoing vaccination programs will help, but still cannot predict when we’ll be ready to fully open up for orders again - so no news on that front.

If you have been watching, you’ve seen a steady stream of new module announcements as we continue to clear out the work we had in progress.  We just put out the announcement of our AstroFuzz module this morning.  That is the last of the modules we had in our queue, but it is a great one – one of our favorites.  There won’t be any more new module announcements for a while.  We still have a long list of new modules we are itching to start on, but we really have to stick to our “pause” plan for a while.  We’ll still probably bend the plan a little bit to sneak in tiny bits of R&D time here and there so we won’t be starting with an empty queue when we “resume”.  But don’t tell anyone.

We also had some other products besides new modules that were making slow progress in our R&D queue before the pause.  One of them is our “Naked Pedals”, which we also announced today.  These are pedals we sometimes build to try out a new effect circuit.  Once we build them, we have no further use for them.  We are now offering them for sale, even during our pause.  Check them out.  Just search for Naked Pedals or look for them in the Products menu.

In addition to the Naked Pedals, we have another pedal-related product that we may make available in the next couple of months or so.  It is something a bit unusual, but we think it is very useful and complements our rack products nicely.  It bends our pause plan a bit more than we probably should, so we’re still considering whether we need to wait until we resume instead.

While we’re paused, we have only very limited time available for our normal activities.  However, if we can manage it, we hope to begin putting together some product videos.  Yes, you’re right – it’s about time!  With our unique way of building effects, along with the sheer volume of effects we offer (hundreds!), this is a gigantic activity for us that is going to take a long time to just catch up with the effects we already have.  We’ll probably know more about our plans for this in the summer, so maybe I’ll have news about that in my next update.

We had a brutal freeze here in Dallas a few weeks back, but the sun is shining and Spring has arrived.  It’s one of my favorite times of the year, the return of warm weather!  What I especially hope is that we’ll soon be hearing live music, both indoors and outdoors.  They say music is the soundtrack of life, and that’s really true for me.  This past year without live music has been sort of like those big “clunks” I used to get between (or during!) songs when my 8-track player switched tracks.  2020 was the year of the “clunk” for me.  But now the sun is shining, the pool is warming up, and the optimism of Spring is in the air!  


Bill Gerlt

President, Gerlt Technologies

Dallas, Texas

12 April, 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!

Today we announce our new GT-100 module.  It compares to the original classic 70's MXR Phase 100 phaser, as well as its recent reissue.  No doubt it was used by many artists in the 70's, including Keith on the Rolling Stones' Some Girls album, and Beast of Burden in particular.  As with a number of MXR pedals, there were "script" and "block" versions released.  With this pedal, you can't actually tell what was inside by looking at the outside, so "script" vs "block" loses much of its meaning.  Nevertheless, we offer both configurations, as well as the ability to have both versions in one module by adding a couple of switches.  The original and reissue pedals (as pictured) had four Intensity presets you could choose from, along with a Speed control.  We can do that, but we offer several control options that let you get many more great phasing tones out of the circuit.  

The circuit has 10 phasing stages, as compared to the usual 4 or 6 of most phasers.  Six of the stages are controlled by optical devices called "vactrols".  Normally, the portion of the circuit that controls the phasing provides a pulsed signal to the phasing stages.  That pulsing signal can cause noise in a phaser.  You've heard it - that swooshing noise that happens even when you aren't playing.  That isn't the only source of noise, but it is one of them.  By using vactrols, that source of noise is removed from the circuit.  The two sections of the circuit are connected only by the light created by some LEDs and picked up by special light-sensitive resistors.  The result is that this phaser is generally much quieter than other phasers that have electric connections between the control and phasing circuits.  These vactrols have to be carefully selected and matched to be most effective, which isn't really a lot of fun to do since vactrols have widely-varying specs.  But once done, you end up with a very nice phaser.

The circuit and control design also results in the full range of controls being great, usable phasing.  You won't get a bunch of spacey, video game sounds that are more common in some other phasers and difficult to use musically.  If you don't know of Gary Hoey, get yourself over to YouTube and check him out.  He loves his surf tones, and has developed a killer metal crunch surf tone.  Check out his version of Wipe Out!  Or even some of his metal Christmas favorites.  Anyway, he's got it going on and he uses one of the reissue Phase 100 pedals.

We offer a number of options for our GT-100, but they are almost all just control options.  We leave the base tone alone and just allow you to dial in more of it.  Check out the GT-100page for more details and listen to Beast of Burden or some Gary Hoey one more time!

You can see the details about our GT-100 module at: GT-100.  Or look for it in the Phaser Modules section under Products -> Modules -> Modules By Type.