A variant of the Gamba, usually found at 8' pitch, but also sometimes at 16' or 4'. The pipes are of open conical form, though Audsley claims that they have sometimes been made inverted conical. According to Hopkins & Rimbault, it was used frequently by Hill & Sons, and had a �rather crisp� tone. Audsley gives a ratio of 1:2 between the top and mouth-line diameters, and specifies a 1/3 to 2/7 mouth with low cut-up and harmonic bridges, and medium scale. He describes its tone as singing and delicate. Wedgwood describes its tone as midway between that of the Diapason and the Gemshorn, and says �the stop known as Cone Diapason is practically a distinction without a difference.� According to Irwin, it is less keen than any other form of Gamba.
Osiris contains 15 examples of Spitzgamba at 8' pitch, one at 4' pitch, and one example of Cone Gamba.