Listed only by Irwin, who says: A wood (or metal) Flute of various shades of color, sounding at 16', 8', or 4' on the manuals. Being an open Flute, it may represent either the Clarabella (beveled lip) tone or the Hohlflöte (inverted lip) tone. The first is likely to be smooth and bright, the second strong in the second harmonic (the octave). . . . This stop name may refer to Echo Flute.