Irwin lists this stop with the following description: An 8' or 4' stopped manual wood Flute of pyramidal shape and very dull tone. It sounds fewer harmonics than even the regular straight-walled Gedeckt. The conical metal form also exists. Sumner also lists it, saying: �A spitzflöte which tapers to a very narrow top, closed with a small stopper. The tone is quiet, dark and interesting.�