A solid-state hydrophone (400; 400A), comprising: a metallic housing; a single piezoelectric rod disposed within the metallic housing and positioned between at least two electrodes (404a; 404b), wherein the piezoelectric rod is a solid piezoelectric material forming a contiguous rod shape, and the electrodes have a cross-sectional shape corresponding to a cross-sectional shape of the piezoelectric rod; potting material positioned adjacent to the piezoelectric rod, wherein at least a layer of the potting material is positioned between the piezoelectric rod and the metallic housing; wherein the metallic housing has a ring shape and a same height as the piezoelectric rod and the electrodes (404a, 404b) along an axial direction of the piezoelectric rod, and is configured to encircle the piezoelectric rod and to shield a longitudinal wall of the piezoelectric rod from acoustic waves; the metallic housing has a thickness of at least 0.5 millimeters (0.02 inches); the metallic housing includes an electric wire coupled to the metallic housing and extending from the metallic housing to a reference potential to create an electromagnetic shield; the at least one layer of potting material is positioned between a longitudinal wall of the piezoelectric rod and the interior surface of the metallic housing; and the at least one layer of potting material has a thickness between 0.5 and 5 millimeters (0.02 and 0.2 inches); and electrode wires (406a, 406b), having a shield covering and coupled to the at least two electrodes (404a; 404b), the shield covering being the reference potential; characterized in that: the potting material is further configured to extend on both sides beyond a border created by an interior surface of the housing along the axial direction of the piezoelectric rod and to cover the electrodes. a metallic housing; a single piezoelectric rod disposed within the metallic housing and positioned between at least two electrodes (404a; 404b), wherein the piezoelectric rod is a solid piezoelectric material forming a contiguous rod shape, and the electrodes have a cross-sectional shape corresponding to a cross-sectional shape of the piezoelectric rod; potting material positioned adjacent to the piezoelectric rod, wherein at least a layer of the potting material is positioned between the piezoelectric rod and the metallic housing; wherein the metallic housing has a ring shape and a same height as the piezoelectric rod and the electrodes (404a, 404b) along an axial direction of the piezoelectric rod, and is configured to encircle the piezoelectric rod and to shield a longitudinal wall of the piezoelectric rod from acoustic waves; the metallic housing has a thickness of at least 0.5 millimeters (0.02 inches); the metallic housing includes an electric wire coupled to the metallic housing and extending from the metallic housing to a reference potential to create an electromagnetic shield; the at least one layer of potting material is positioned between a longitudinal wall of the piezoelectric rod and the interior surface of the metallic housing; and the at least one layer of potting material has a thickness between 0.5 and 5 millimeters (0.02 and 0.2 inches); and the metallic housing has a ring shape and a same height as the piezoelectric rod and the electrodes (404a, 404b) along an axial direction of the piezoelectric rod, and is configured to encircle the piezoelectric rod and to shield a longitudinal wall of the piezoelectric rod from acoustic waves; the metallic housing has a thickness of at least 0.5 millimeters (0.02 inches); the metallic housing includes an electric wire coupled to the metallic housing and extending from the metallic housing to a reference potential to create an electromagnetic shield; the at least one layer of potting material is positioned between a longitudinal wall of the piezoelectric rod and the interior surface of the metallic housing; and the at least one layer of potting material has a thickness between 0.5 and 5 millimeters (0.02 and 0.2 inches); and electrode wires (406a, 406b), having a shield covering and coupled to the at least two electrodes (404a; 404b), the shield covering being the reference potential; characterized in that: the potting material is further configured to extend on both sides beyond a border created by an interior surface of the housing along the axial direction of the piezoelectric rod and to cover the electrodes.