Hello Effects Fans!

It has been pretty quiet here since my last update, as expected, but not silent!  Earlier today we announced our new 3U Pedal Rack and our new Double Looper configurations.  These two offerings are designed to make migrations to our rack solutions easier, providing more and better ways to continue using your third party rack effects and pedals in an all-rack solution. 

Our status hasn’t really changed much.  You are probably aware that there are some serious supply chain problems in the electronics world.  Those shortages are affecting the availability of many end products from appliances to automobiles, to, yes, Gerlt Technologies rack effects.  We are simply unable to get some critical parts right now.  Projected back order dates come and go with no new parts becoming available.  For us, these are simple, but critical parts used in our circuits.  They haven’t stopped making them or anything like that.  It’s just that they aren’t able to make enough of them fast enough with staff, facilities, and transportation that continue to be impacted by COVID all over the world.  Of course, the small supplies that are made are going to The Big Guys first.  It will be a while before availability trickles down to smaller companies.  That’s just the laws of supply and demand in action.  It will eventually get sorted out, but in the meantime small manufacturers like Gerlt Technologies will just have to wait.  That’s why we stopped taking orders earlier this year.  We plan to be a survivor, not a casualty, of the COVID aftermath.  I still don’t know when we’ll be able to restart, but some of our latest backorder dates for parts will almost certainly push a restart into early next year.

The best news is that live music is back!  Every day I see more and more info about tours and local shows.  I hope that all you professional and gigging musicians are getting more bookings – we’ve missed you!  For all of us that don’t play publicly, COVID has been a nasty reminder about taking our lifestyles for granted, as has been the passing of some great musicians like Dusty Hill and Charlie Watts.  Enjoy your favorite music live (and safely) when you can!

We appreciate your patience with us during our temporary shutdown.  Once things are back to “normal enough”, we’ll be ready to do what we can to earn your business and get you into some excellent rack effects.


Bill Gerlt

President, Gerlt Technologies

Dallas, Texas

26 August, 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.