The original pipe organ built in the cathedral had been moved from St. Margaret's Cathedral.
It had been donated by Antoine LeClaire.
It was replaced in September 1895 by a new instrument arraigned for by Father Davis at a cost of $3,000.
Therese Laurent, the cathedral's organist, and the cathedral choir gave a concert of sacred music to dedicate the new organ.
Plans to replace that organ began as early as 1944.
In 1949 the Kilgen Organ Company approached Msgr.
Martin Cone about the possibility of installing an instrument that was intended for St. Rita's Church in Chicago.
Construction on their new church had been delayed and so the organ, which was already being built, could be installed in Sacred Heart instead.
The offer was accepted and the new pipe organ was installed for $27,000.
The Rev. James Greene from St. Ambrose Academy gave a dedicatory concert.
The old Kilgen pipe organ was removed in 1991, and replaced with a new Noack pipe organ, opus 119.
It was first used for the Silver Jubilee of Bishop Gerald O'Keefe as bishop of Davenport on January 29, 1992.

The organ is located in the rear gallery of the cathedral.
Some of the pipes are exposed in three cases.
It features a traditional style console with the mechanical action console detached from the main case.
It is equipped with slider chests, mechanical key action, and electric stop action.
There are two manuals, 35 stops, 35 ranks, the manual compass is 61 notes, and the pedal compass is 32 notes.
The drawknobs are in horizontal rows on terraced/stepped jambs.
It features balanced swell shoes/pedals with standard AGO placement.
The combination action is a computerized/digital system.
It includes an AGO Standard (concave radiating) pedalboard, combination action thumb pistons, and combination action toe studs.

Stoplist:


 
GREAT ORGAN
16 Double Diapason
8 Diapason
8 Second Diapason
8 Chimney Flute
4 Octave
4 Harmonic Flute
2-2/3 Twelfth
2 Fifteenth
1-3/5 Seventeenth
1-1/3 Mixture IV
8 Trumpet
4 Clarion
 
SWELL ORGAN
16 Bourdon
8 Diapason
8 Bell Gamba
8 Gedackt
8 Celeste
4 Prestant
4 Recorder
2 Gemshorn
2-2/3 Sesquialtera II
2 Mixture IV
16 Bassoon
8 Oboe
 
PEDAL ORGAN
32 GrandBourdon
16 Violone
16 Open Wood
16 Stopt Bass
8 Diapason
8 Gedackt
4 Choral Bass
2-2/3 Mixture IV
16 Trombone
8 Trumpet
4 Trumpet
The original pipe organ built in the cathedral had been moved from St. Margaret's Cathedral. It had been donated by Antoine LeClaire. It was replaced in September 1895 by a new instrument arraigned for by Father Davis at a cost of $3,000. Therese Laurent, the cathedral's organist, and the cathedral choir gave a concert of sacred music to dedicate the new organ. Plans to replace that organ began as early as 1944. In 1949 the Kilgen Organ Company approached Msgr. Martin Cone about the possibility of installing an instrument that was intended for St. Rita's Church in Chicago. Construction on their new church had been delayed and so the organ, which was already being built, could be installed in Sacred Heart instead. The offer was accepted and the new pipe organ was installed for $27,000. The Rev. James Greene from St. Ambrose Academy gave a dedicatory concert. The old Kilgen pipe organ was removed in 1991, and replaced with a new Noack pipe organ, opus 119. It was first used for the Silver Jubilee of Bishop Gerald O'Keefe as bishop of Davenport on January 29, 1992.
The organ is located in the rear gallery of the cathedral. Some of the pipes are exposed in three cases. It features a traditional style console with the mechanical action console detached from the main case. It is equipped with slider chests, mechanical key action, and electric stop action. There are two manuals, 35 stops, 35 ranks, the manual compass is 61 notes, and the pedal compass is 32 notes. The drawknobs are in horizontal rows on terraced/stepped jambs. It features balanced swell shoes/pedals with standard AGO placement. The combination action is a computerized/digital system. It includes an AGO Standard (concave radiating) pedalboard, combination action thumb pistons, and combination action toe studs.
Stoplist:


 
GREAT ORGAN
16 Double Diapason
8 Diapason
8 Second Diapason
8 Chimney Flute
4 Octave
4 Harmonic Flute
2-2/3 Twelfth
2 Fifteenth
1-3/5 Seventeenth
1-1/3 Mixture IV
8 Trumpet
4 Clarion
 
SWELL ORGAN
16 Bourdon
8 Diapason
8 Bell Gamba
8 Gedackt
8 Celeste
4 Prestant
4 Recorder
2 Gemshorn
2-2/3 Sesquialtera II
2 Mixture IV
16 Bassoon
8 Oboe
 
PEDAL ORGAN
32 GrandBourdon
16 Violone
16 Open Wood
16 Stopt Bass
8 Diapason
8 Gedackt
4 Choral Bass
2-2/3 Mixture IV
16 Trombone
8 Trumpet
4 Trumpet
Sacred Heart Cathedral (Davenport, Iowa)