This is an effects unit that allows you to enjoy a vintage-style delay sound. It records the input signal and plays it back with a time difference, creating a repeating, decaying echo. From warm sounds like tape echo to clear digital delay, a wide range of expression is possible. I was using this until recently, and I've performed a basic operational check. Knowledge is required for use and installation. No claims and no returns accepted. Please refer to the photos for the product's condition. This is a used item, so please refrain from bidding if you are extremely sensitive to condition or are looking for a new-like condition. We will ship within 2-4 days after the bid is placed. Management number: 14