" ... succeeded in recovering the previously unrecognisable attraction of the small organ."
Joerg Kraemer, church musician, Director of the Organ Museum, Borgentreich, Organ Advisor to the Paderborn archdiocese.
"Through the restoration by Orgelbau Oppel, the only existing organ by Jakob Koehler, apart from the one in Schornsheim, has been returned to a condition which justifies its definition as an organ of great significance. In addition to the very careful and competent technical work the intonation of the individual voices is remarkable and has succeeded beautifully. Each individual voice has its own character again; the plenum is not intrusive. Mr. Oppel proved his good sense of sound."
Hartmut Mueller, Alzey (Organ Advisor to the EKHN)