A soft-toned Bourdon. Audsley describes it as being made of wood and metal, and �somewhat resembling in formation and tone the German Lieblichgedeckt�, but says nothing about what difference there may be. It is also not clear how this stop differs from the Lieblichbordun.
Osiris lists seven examples of Bourdon Doux at 8' pitch, 27 at 16', and one 32'. The examples listed below include the oldest ones known.