Here are a couple sound clips Kris Youngsteadt recorded of his Plexi SE PCB. He converted his Epiphone Valve Junior into the Plexi configuration using one of the early prototype "hand etched" versions of this board. Thanks Kris for the amazing job you did as a development consultant and recording artist.
(If you can't get them to play, try saving the files to your computer. Right click on each file and select "Save Target As".)