Gran Órgano (I):
violón 16', flautado 8’, flauta 8', octava 4'.

Recitativo (II):
cor de nuit 8', viola de gamba 8', voz celeste,
trompeta armónica 8'.

Pedal:
contrabajo 16'.

I/P, II/P, II/I, Expresión total, suboctavas II/I, superoctavas I/I, Tutti.
 
Two 61-note keyboards and pedals than 30 notes.

La 4: 440 Hz. Equal temperament.
Pneumatic transmission.
 
     
 
Organ built in 1926 by Juan Dourte in Bilbao.

Instrument in poor condition.