Though digital, the Casper is designed to produce analog sounding delay tones. Three “Ghost Lit” knobs glow eerily when the effect is engaged, as they dial in delay, feedback, and wet/dry mix. An interior trim-pot controls whether—and how fast—the feedback goes into self-oscillation. To my ears, CAST Engineering has produced a digital delay with all the warmth and grit of an analog or tape unit. The name’s subtitle, “a ghostly delay”, seems appropriate, as the repeats lurked