The legendary digital delay, the SDE-2000. Input to output on both output systems confirmed. All switches and knobs have been tested and are working, with no scratchiness. I think it's in relatively good condition. The regulator visible from the outside seems to have deteriorated, so I'm selling it as junk. The following is AI generated ⬇ The digital delay SDE-2000 allows for adjustments to feedback and modulation, making it ideal for music production. - Model Name: SDE-2000 - Function: Digital Delay - Adjustable Parameters: Feedback, Modulation, Delay Output Volume Thank you for looking.