Here we have a very rare Subdecay Spring Theory Reverberator Reverb effects pedal, made in Newberg, Oregon USA in the year 2000. These pedals were soon replaced with the Super Spring Theory pedal by Subdecay and, as a result, are rarely found for sale anywhere in the world, particularly outside of the USA.

It is a stunning spring reverb pedal which creates everything from 60’s surf spring-verb all the way to an expansive room (verging on hall) reverb. We LOVE this pedal!

Here’s what Subdecay have to say about the Spring Theory:

For our first foray in to DSP we put our white lab coats on, we listened to a lot of reverb, and then we listened some more. We tore apart reverb tanks to see what makes them unique and created something truly special.

The Spring Theory is designed specifically for guitar. You won’t hear a supposed spring reverb simulation that just doesn’t cut it, or some so-called “studio” reverb designed for vocals or drums ported to a pedal format as an afterthought.

This sounds like the real deal!

The Spring Theory sounds and feels like a real tube driven black face reverb. It reacts dynamically to the attack of every note you play. You can hear the springs chirp and resonate. Vintage wet surfy reverb sounds that are only found in amplifiers and stand alone spring reverb units… Until NOW!!!

Oh, and we haven’t even mentioned that other setting. Not only did we create a great authentic spring reverb pedal, but we also created a very special room reverb. The room setting simulates anything from a small space to a 10 mile wide cavern with ceramic tile on every surface.

The reverb knob sets the effect volume. The depth knob controls the reverb length. Set the depth knob near the middle for realistic lush sounds. Turn it to the right for unrealistic everlasting reverbs. The room setting is especially awesome for this for creating synth like pad sounds and thick, rich sonic landscapes.

The Spring Theory can be powered by AC adapter only (not included). There is no battery option for this pedal.


  • Powered by a regulated 9VDC to 18VDC adaptor with a negative center 2.1mm barrel style plug (not included).
  • If using a “daisy chain” power supply, all other pedals MUST be negative ground.
  • Current draw is less than 100mA.
  • Length 4.4″ X Width 2.3″ X Height 1.0″
  • Input impedance- 1M.
  • Output impedance- 1K.
  • True Bypass
  • The Spring Theory is hand made in Newberg, Oregon, USA.
  • Die-cast metal enclosures for durability.
  • 3PDT switches for true bypass switching.
  • Red LED indicator.


Due to the current lockdown in England, this item is available from our store in Exeter (Click & Collect only) or by post (at an additional cost of £8 due to weight, cost of packing materials and levels of required insurance). 

If postage is selected, it will be packed very carefully and sent via Royal Mail 2nd Class within 3 working days of purchase. 

If you have any questions, please contact us before purchasing either by email or phone (both on our website).