管風琴的聲音是由吹過不同尺寸的管子的穩定氣流產生的。聲音是由空氣透過一個狹窄的縫隙吹到邊緣上而發出的，同錄音機原理；或者像單簧管一樣，由管子裡的震動簧片發出。
直到大約一個世紀以前，管風琴演奏所需的壓縮空氣氣流還是透過腳踏風箱產生的。大管型風琴需要多達 12 個人來完成這項艱鉅的任務。直至電的出現，建造風琴材更廣泛地使用電動風箱。與腳踏風箱相比，電動風箱產生非常穩定且安靜的氣流。但是如何設計電動的氣流產生器使其在安靜的音樂片段中也不被聽到始終是一個挑戰。
The sophisticated wiring and layout of the controller ensures operation is completely silent and the musical enjoyment is not diminished even during the quietest sounds. The Festo solution also enables a dynamic switch between those parts in the music requiring low air consumption and those needing a full blast of air. The required air pressure of 4.5 millibar remains constant, as one of the two bellows always retains enough reserve air.
The restored instrument with the automated bellows lifting unit has successfully been in action at the college premises in Regensburg since the end of July 2014. The organ has been used in lessons for authentically playing Italian music from the 18th century. Modern technology from Festo has helped to keep a piece of historical music culture alive.