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!

It has been a while since my last update.  Our status has not changed much.  We are still unable to take new orders.  I’ve personally been off doing something completely unrelated, lots of fun, a long ways from home.  That has gone well, but is taking longer than expected.  Instead of finishing up about now, it appears I won’t finish before late Spring or early Summer.  Our status won’t change before then.

Parts availability and cost were primary causes of our current shutdown.  We use around 6500 different vintage and current production parts to build our rack effects.  It has been difficult to find good vintage parts for a while now, and it gets a little more difficult each year - nothing new about that.  Counterfeit and reject parts flood the market, and prices have soared as caches of legit parts dwindle.  The good news is that vintage parts are often not needed to get great-sounding effects.  Usually there are newer parts that will work as well or better if you can get past the volumes of misinformation and hype out there.  Listen with your ears, not your eyes!

Lack of current production parts forced us to stop taking orders.  Some critical parts do seem to be available again, at an increased price.  We want our rack effects to be affordable, and increased part prices are not helping with that.  For example, one part we use in nearly all of our modules, sometimes several per module, went from about 80 cents to around $5+ each.  Really?!?!  Fakes are also flooding the new parts market to fill the demand of the unwary.  However, a few parts are trending down in price.  In these cases there were too many manufacturers, and none of them were getting enough market share to make larger quantities to help reduce their costs.  Some have gone out of business, leading to consolidation and lower production costs.  We’ll take a cost reduction (and pass it along) anytime we can get one!  I’ll have to sort through our hundreds of effects and countless options to determine any impacts to our pricing.  My goal is to remain comparable to pedal prices.  Or better!

Where does that leave us?  The situation has improved, but we still cannot take new orders.  I’m going to work to finish up my side adventure.  I’ll pop up again, probably around June or July, and see how things are looking and provide another update.  

Best wishes for 2023 !!!

Bill Gerlt

President, Gerlt Technologies

Dallas, Texas

28 January, 2023




Hello, Effects Fans!

Today we announce our new Nectarine Fuzz module.  The Gerlt Technologies Nectarine Fuzz compares to the Frantone Peachfuzz.  Fran Blanche began building Frantone pedals in the '90's.  You may remember that she also worked with EHX to design the v9 "NYC Reissue" Big Muff Pi.  The 2-knob (no Tone) version of the Peachfuzz was introduced somewhere around 1996.  A pause in production of these hand-built pedals from about 2009 to 2016 made them somewhat scarce (and pricey) on the market.

This is a big, no-holds-barred fuzz, a bit on the dark side.  You should have no problem getting a thick and heavy fuzz tone.  It is a simple circuit of three distortion-producing op amp stages feeding a Big Muff style hi cut / lo cut Tone control, then out through the Volume.  The heavy sound is achieved by letting a good deal of the bass go through the circuit, so bass players take note.  Usually, a fuzz tends toward muddiness or flub when the bass isn't trimmed back, but that doesn't happen in this circuit except maybe a bit when you wander into the extreme ranges of the Fuzz and Volume controls.  

At first, you may jump to the conclusion that it is another "blanket over my amp, bassy fuzz.  You need to twiddle with it for a minute to figure out that isn't the case.  Yes, the Tone is shifted more toward the bass end, but if you dial it the other direction, the bass rolls down and more highs come through.  Either way, you've got a good fuzz going on.  Another thing you'll notice is that your guitar tone is still coming through in all that fuzz.  For instance, you expect those woodier tones on the higher frets and you get them, nicely fuzzed up, but clearly there.  This might be a good fuzz for stacking, staying articulate and not getting muddy.  The fuzz itself will go from kind of cleanish to heavy duty.  It sounds and feels somewhere between a heavy fuzz and a high gain distortion.  You can hear what your fingers are doing more than you can with most heavy fuzzes.

There's a good amount of Volume on tap.  With humbuckers, the fuzz tends to thin out more than clean up with the guitar volume.  With single coils, it cleans up a bit more.  But that's not what it is about.  It's best to think of it as a medium to heavy high gain fuzz, with the top end trimmed back a bit.  The trimming of the top end keeps the noise pretty low.  It didn't seem that remarkable when we first started playing it - just another woolly, heavy fuzz.  But the more we played it, the more we liked it and now we "get it".  Find your settings and let it rip!

Nice as this fuzz is with guitar, it seems to pair equally well with a bass.  The controls feel like they have a wider range with bass.  Fuzzes have some noise, of course.  That noise is trebly by nature and can be more apparent when you are just sending in bass.  But a quick adjustment of knobs on our bass or the module let us dial it out to yield a surprisingly noise-free, heavy fuzz bass on our J-Bass with N3 pickups.  As with guitar, the fuzz stays nicely articulate and you can still clearly hear your base tone.  This fuzz doesn't cover up sloppy playing like some others, so you can easily hear what your fingers are doing.  Very nice.  Best bass fuzz...???  That's pretty subjective, but if you haven't found your bass fuzz yet this one is worth a try.

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