Original specification Virtual extension
Pedal (27keys) (27 keys)
Superoktav 2' Mixtura
Great (54 keys) (54 keys)
Positiv (54 keys) (54 keys)
A special feature of the Organ the twin- windchests. It works like a permanently activated coupler between the two manuals.
The original version: No Coupler, no tremulant
The extended version: Couplers:I+II sub, I+II, I+II super, II+I, P+I, P+II,
Expression pedal: Pos
Tremulant: Pedal, I, II.