Feeder device for feeding a stack of value documents, in particular banknotes, to a singler device, which is configured to withdraw individual value documents from the stack, wherein the feeder device comprises: - a stop element having a front side and a back side, the front side being configured to serve as a stop for a rear side of the stack and to guide the stack at the rear side of the stack towards the singler device, - two lateral guide elements provided at the front side of the stop element and configured to guide the stack at two lateral sides of the stack towards the singler device, - two support elements, on which the lateral guide elements are mounted, and - two or more bearing elements by which the support elements are movably mounted on the stop element to allow the respective positions of the lateral guide elements and/or the distance of the lateral guide elements relative to each other to be changed, wherein the bearing elements comprise and/or are roller elements rotatably mounted on the support elements, wherein the feeder device further comprises a coupling element which is configured - to couple the support elements with each other such that by moving one of the lateral guide elements in a first direction, the other lateral guide element is moved in a second direction opposite to the first direction, and characterised in that the coupling element is further configured - to decouple the support elements from each other so as to allow moving and positioning the lateral guide elements independently from each other, wherein - the feeder is configured such, that the coupling and the decoupling can be initiated by actuating an electrical switch provided at the front side of the stop element and configured to activate a rotary or linear actuator or - a rotatable knob is provided at the front side of the stop element that is rotatable in order to couple or decouple the support elements from each other. - a stop element having a front side and a back side, the front side being configured to serve as a stop for a rear side of the stack and to guide the stack at the rear side of the stack towards the singler device, - two lateral guide elements provided at the front side of the stop element and configured to guide the stack at two lateral sides of the stack towards the singler device, - two support elements, on which the lateral guide elements are mounted, and - two or more bearing elements by which the support elements are movably mounted on the stop element to allow the respective positions of the lateral guide elements and/or the distance of the lateral guide elements relative to each other to be changed, wherein the bearing elements comprise and/or are roller elements rotatably mounted on the support elements, wherein the feeder device further comprises a coupling element which is configured - to couple the support elements with each other such that by moving one of the lateral guide elements in a first direction, the other lateral guide element is moved in a second direction opposite to the first direction, and characterised in that the coupling element is further configured - to decouple the support elements from each other so as to allow moving and positioning the lateral guide elements independently from each other, wherein - the feeder is configured such, that the coupling and the decoupling can be initiated by actuating an electrical switch provided at the front side of the stop element and configured to activate a rotary or linear actuator or - a rotatable knob is provided at the front side of the stop element that is rotatable in order to couple or decouple the support elements from each other. the bearing elements comprise and/or are roller elements rotatably mounted on the support elements, wherein the feeder device further comprises a coupling element which is configured - to couple the support elements with each other such that by moving one of the lateral guide elements in a first direction, the other lateral guide element is moved in a second direction opposite to the first direction, and characterised in that the coupling element is further configured - to decouple the support elements from each other so as to allow moving and positioning the lateral guide elements independently from each other, - to couple the support elements with each other such that by moving one of the lateral guide elements in a first direction, the other lateral guide element is moved in a second direction opposite to the first direction, and characterised in that the coupling element is further configured - to decouple the support elements from each other so as to allow moving and positioning the lateral guide elements independently from each other, wherein - the feeder is configured such, that the coupling and the decoupling can be initiated by actuating an electrical switch provided at the front side of the stop element and configured to activate a rotary or linear actuator or - a rotatable knob is provided at the front side of the stop element that is rotatable in order to couple or decouple the support elements from each other. - the feeder is configured such, that the coupling and the decoupling can be initiated by actuating an electrical switch provided at the front side of the stop element and configured to activate a rotary or linear actuator or - a rotatable knob is provided at the front side of the stop element that is rotatable in order to couple or decouple the support elements from each other.