The complete (pedal) version of this product has been discontinued, but the PCB/kit is still available. We replaced the pedal with the Cosmic ECHO for guitar or synth. It has all the mods and is a much simpler build.


The PT2399 Delay is a great way to get some delay! Put it in a nice rugged Hammond enclosure and you’ve got an awesome delay pedal!


  • 3 controls – Delay Length, Mix, and Feedback – to customize your sound. Delay Length adjust your delay from fast slapback echo to long dub-style repeats, Mix allows you to set the wet/dry portions of the signal, Feedback gives you total control over the number of repeats, even allowing infinite repeats.
  • Buffered input and outputs featuring NE5532 low noise op amps
  • The PT2399 Echo IC was designed to mimic old-school analog BBD delay with modern digital sampling technology. Repeats degrade at higher delay lengths, resulting is a very natural well-filtered reproduction of your synth/guitar tone.
  • Dual power supplies (9V Battery and +9VDC =>200mA Center Negative DC Adapter Power Supplies) allow you to have the battery as backup or as the main power supply.
  • Input jack switching – No instrument cable plugged in, no power used. Save life on your expensive batteries!
  • PCBs are professionally manufactured in the USA by Imagineering, based out of Elk Grove Village, IL, and designed here at Synthrotek. PCB silkscreen, through-hole components with careful on-board placement, and wire-tension relief holes were designed with the DIYer in mind!
  • PCB Dimensions: 3.125″ x 2″
  • Great for synths and guitars! Easy to configure and mod your circuit for a greater delay range, delay length modulation, and a lot more!
  • Console or stomp box version

Check out our Youtube channel for more videos

1 Comment

  1. says:

    Hi, just wanted to mention, I enjoyed this blog post. It was helpful. Keep on posting!

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