Introduced in 1983 by our parent company Roland, the SDE-3000 is revered for its beautifully rich sound and distinctive modulation. The coveted SDE tone was realized through a finely tuned digital engine and the non-linear behaviors of the supporting analog circuitry, including magnetic saturation in the anti-alias filter, evolving modulation produced by the components of the time, and an altered triangle LFO shape. The SDE-3 brings the authentic vibe of this classic delay to a pedalboard-friendly BOSS compact, enhanced with innovative creative features for every musical style.