System: Zademack (unisonoric, logical)

(Collection Oriwohl, Nr. 104)

Manufacture: Julius Zademack (Berlin) on 7.7.1909.
Range: B1 - f3 (1 octave overlapping). zinc single reedplates

Around 1900, the development of unisonoric instruments also began in bandonion making. The Berlin instrument maker Julius Zademack (1874-1941) is the first to offer a unisonoric model as an alternative to the previously invariably bisonoric bandonions that had been used until then.

The equal tone principle makes it easier for him to develop a logical keyboard system. The beginning of its development led to the Kusserow model in 1925.