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!

Yikes!  We’ve been so busy working on new modules that we let some of our new product announcements slip.  It’s time to correct that oversight. 

Today we announce the Gerlt Technologies Chainsaw module.  It is an extreme high-gain distortion for the most brutal and heavy metal you can legally play in most countries.  If you like your metal Swedish style, then our HM-2 configuration may be what you want.  It compares to the original Made In Japan Boss HM-2 Heavy Metal pedal, a classic ingredient to that heavy Swedish death metal sound.  Add a humbucker guitar, a solid state amp, set all the knobs to 10, and you’re on your way.  Or if you prefer some American heavy metal, choose the FX56 configuration, which compares to the Made in the USA DOD FM-56 American Metal pedal.  The circuits are nearly the same.

The Boss HM-2 was produced from 1983 to 1991, first in Japan and later in Taiwan.  The two versions of the circuit are nearly identical, with some minor part changes.  The earlier MIJ models seem to be most popular, although it is difficult to tell the difference in sound between the ones made in Japan and Taiwan.  The HM-2 wasn't really all that popular, but you may remember that the heavy metal bands were just beginning to emerge around that time.  Somehow it caught on in Sweden, and suddenly the price of the older units jumped as players began buying them up for the heaviest of heavy metal tones.  It is often used with all controls set at max to get maximum distortion tones.

In 1984 US pedal company DOD released the FX56.  The FX56 circuit is basically the same as the HM-2, but some different part values were used and the Low and High controls were combined into a single Presence control, although it continued to use the unique tone stack design of the HM-2, but with slightly tweaked frequency ranges.  The FX56 goes from overdrive to distortion, although perhaps the level of distortion is a bit lower.  The Presence control goes from a subdued, compressed tone to bright and cutting.  With the controls turned up, you'll likely get out-of-control feedback and squealing.

Make no mistake, both configs are designed primarily for very high distortion metal tones.  But if you dial it down a bit, you may find your Iron Maiden, Judas Priest, and other British metal tones in there, too.  With all that gain, you’ll have loads of feedback and it may get into a squealing, out of control mess depending on your guitar, amp, and other gear.  If that happens, you know you have all the gain your rig can handle and you’ll likely need to take a little gain off somewhere to get it under control.  Of course that much gain means there is also an excellent opportunity for noise.  Gain will multiply noise just as easily as your guitar tone, as high-gain players well know.  You’ll probably want humbuckers and some sort of active noise management somewhere in your chain.

The interesting part of this circuit is the tone stack.  It is designed to help maintain some clarity with all that gain.  This is also where the two configurations differ most.  The HM-2 config has Lo and High “Color Mix” controls.  The Lo controls the low end like normal.  But the frequencies controlled by the Hi band adjust as you adjust the level of highs.  The FX56 config is similar, but the Lo and Hi controls are combined into a single Presence control.

We offer some customizations for both circuits, but if you’re looking at this module then you are probably after that heavy tone and you won’t need any options to get it.

You can see the details about our Chainsaw at: Chainsaw.  Or look for it in the Distortion Modules section under Products -> Modules -> Modules By Type.