Alessis Quadraverb with original power supply, both functioning perfectly. This is the Quadraverb made famous by Aphex Twin back in the day, by MkGee more recently. This particular unit itself functions as expected without any issues. Jacks, screen, LEDs and buttons all function correctly as well. In short, it has no functional issues. I'm selling to make space for new gear, as I don't use it as often any more. Has wear marks that I've included in pictures—notably, these are on the rack mount holes, but there are some scratches most notably on the faceplate and the top of the unit. I would say these are consistent with its use, being manufactured in the 90s after all. Reach out with any questions you have, I'm happy to answer!