The invention relates to a monitoring system (1) for monitoring acoustic heart signals, comprising a sensor housing (2) comprising a heart sound sensing element (3) adapted to be arranged in connection to a patient' s heart to sense heart sounds and to generate a heart sound signal related to the heart sounds;a monitoring unit housing (4) comprising a processing unit (5) adapted to receive said heart sound signal , wherein said monitoring unit housing (4) is separated from said sensor housing (2) and is adapted to be arranged in relation to the patient' s upper sternum , wherein the monitoring system (1) further comprises a flexible elongated connector (6) connecting said sensor housing(2) to said monitoring unit housing(4), said connector (6) having a longitudinal extension along a longitudinal axis(7) , wherein said connector (6) is connected to said monitoring unit housing(4) in an angular relationship , and wherein the angle a between said longitudinal axis (7) and a main axis (8) of said monitoring unit housing (4) is within a predetermined interval.