EPSi: Convolution Powered Reverb in a Small Stomp Box

  • Up to 6 seconds of convolution
  • Comes with more than 100 sounds
  • Best sounding springs, plates and acoustic spaces
  • Never heard before FX sounds
  • Use your own impulse responses
  • Small rugged stomp box


October 09 2019 – [UMI3] Version 0.94 Setup Panel
The UMI3 Setup Panel is now a 64-bit application. Version 0.94 also includes a few minor changes. Get the new version
November 21 2018 – [UMI3] Glamourous sighting of two UMI3s
9 years after its launch, the UMI3 is still going strong. It has just been spotted in a great setting. In this video the legendary keyboard player uses 2 UMI3s to trigger his software looper. The pedals are used throughout the improvisation. At the 30:25 mark, he explains a bit about his looping setup and we see both UMI3s, "and it's really cool!".

March 6 2016 – [EPSi] Spring reverb blind test
One of our users made an impulse response of the spring tank of his classic guitar tube amp. He then made the following recording of a side by side blind test of the real thing vs. its IR used on the EPSi. See if you can tell the difference. The IR used in the test can be downloaded

March 21 2014 – [EPSi] Firmware versions available for download
Firmware Version 1 and Version C for the EPSi are now available for download.
February 19 2014 – [EPSi] Version C for EPSi is here
We completed Version C for EPSi, a firmware version for Cabinet Speaker and Room simulation. The convolution engine was tweaked to achieve zero latency. The total analog in to analog out latency is 1.0ms most of it due to the converters. The convolution window was brought down to 1.5 s. That is still 65536 samples or 64x1024 “points”- 2 channels of that. We also added a handy tone control type EQ. This is what it sounds like with just an overdrive pedal. Version C EPSis ship now.

February 4 2014 – [Logidy] Winter NAMM 2014
Logidy was at the 2014 winter NAMM show. Our friends Cave and Bryan from PreSonus stopped by our booth and made this quick video. As announced to them, we are currently working on a zero latency dual channel version of the firmware for direct path Cab+Room applications. We should have something to try out around Feb 20.

January 6 2014 – [EPSi] Announcing EPSi
After two years of development we are proud to launch a great new hardware product. A reverb stomp box based on convolution. See what it is all about.

December 13 2011 – [FC] First Customer Feedback For Full Circle
So far so good. A few users have reported issues that we have been able to resolve. We released two bug fix versions since the launch.
October 13 2011 – [FC] Going live with Full Circle
The first Beta version of Full Circle is available for download. See if you can make it work.
September 27 2011 – [FC] New Product Announcement
We are putting the last touches on an exciting new companion product for the UMI3: Full Circle, a standalone 3-track software looper with effects for Mac and PC. Check out the Youtube video below to get an idea of what this is all about. We hope to put up a beta version of the program for download on this web site by October 20. Unlock codes for that version will be free!

December 06 2009 – [UMI3] Setup Panel Version 0.92 release
This new version includes support for the default saving feature in UMI3s with 1.10 firmware. We hope to release soon an update of the Panel which will include mutil-unit support. Stay tuned...
November 27 2009 – [UMI3] Firmware version 1.10 completed
Units shipping from this date on will run version 1.10 of the firmware. It includes the highly requested ability to store a static configuration in the pedal, for users who don’t always need to run the sequencer in the Setup Panel live.
November 20 2009 – [UMI3] First customer feedback
Thank you for your comments. It’s a great feeling to hear that the targeted user of your product actually likes using it. We received a couple of requests for new features that we will be working on, but we also got some great comments, like these:

“The UMI3 is a really great product that I'll be using extensively with Ableton Live … an excellent device with build quality worthy of a pedal costing 3 times as much” - Zan, London UK.

“Great little unit!” - Christian, Paris area France.

Or how about this one:
"Top marks all round. Happy to say the device is working perfectly under Windows7Pro Core2Duo with "Ableton Live 8 Suite" and "Guitar Rig 4 Pro" I'm using it with a Boss FV-500L expression/volume pedal and the expression tracks much better than my [competitor's USB MIDI keyboard] expression input - using same pedal. The UMI3 is replacing a [competiror's MIDI floorboard] which is neat but huge, complex and a pain to program - Latest UNO firmware even. Your software is tidy and very simple, with loads of possibilities, great combination.Very pleased with this purchase - solid, useful hardware at a great price! " - Richard, Sydney Australia

November 13 2009 – [UMI3] Orders are coming in
From the U.S. Europe and Australia. Thank you so much for your orders Y’all.
November 09 2009 – [UMI3] Going Live
Our press release to harmony-central was picked up by many other news websites world wide. This generated a lot of traffic on our web site.

Copyright Logidy 2009-2019