The Imperial Cathedral (Kaiserdom) in Königslutter is a significant Romanesque monument in Germany, founded in 1135 by Emperor Lothar III as a Benedictine abbey and royal burial site. Following his death, construction continued under Henry the Lion, resulting in a massive cruciform basilica approximately 75 meters long and 18 meters high. At the end of the 19th century, the cathedral underwent extensive restoration, including the uncovering of its interior medieval artwork, which had been painted over. These vibrant 19th-century murals are now considered an important example of that era's ecclesiastical art.

As part of the restoration, a new organ was built in 1892 by the renowned firm P. Furtwängler & Hammer of Hanover (Opus 286). With 44 stops on three manuals and pedal, the organ follows the late Romantic German tradition, emphasizing rich tonal colors through a wealth of 16’, 8’, and 4’ foundation stops. It features the degressive terrace dynamic concept, allowing seamless dynamic shaping through layered manual divisions. The mechanical-pneumatic key action—also used by Cavaillé-Coll—offers precision and ease of play, using cone valve windchests that provide full wind to each pipe independently.

Although it underwent some baroque-influenced alterations during the 1940s and electric action was installed in 1984, a major restoration between 2008 and 2010 reversed these changes. The organ was returned to its original Romantic sound and action by Hartwig Späth (Freiburg), using original components that had been preserved. Today, this Furtwängler & Hammer instrument is considered one of the finest Romantic organs in northern Germany, both musically and historically.

Additionals: II-I, III-II, I-P, Tremulant II

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