A frequency-selective damper valve comprising - a controlled flow channel (302, 205, 105, 301; 910) arranged to provide a fluid connection between a first damper valve side and a second damper valve side of the damper valve; - a controlled valve assembly provided in the controlled flow channel to allow, in operation, influencing a controlled fluid flow (F15, F25) in the controlled flow channel in a controlled flow direction from the first damper valve side to the second damper valve side; - a movable valve body being movable with respect to a wall of the controlled flow channel and acting on the controlled valve assembly to allow changing a flow resistance for the controlled fluid flow by the controlled valve assembly and - a variable volume chamber (710, 720), the movable valve body interacting with the variable volume chamber such that movement of the movable valve body and a change in volume of the variable volume chamber are interrelated, wherein the variable volume chamber comprises an outlet opening (711, 721), in operation, downstream of the controlled valve assembly and does not comprise an opening upstream of the controlled valve assembly with respect to the controlled fluid flow (F15, F25) in the controlled flow channel, the outlet opening providing a flow resistance, and a fluid pressure upstream of the controlled valve assembly with respect to the controlled fluid flow acting on the movable valve body to induce a force on the movable valve member in a direction to increase a fluid pressure in the variable volume chamber and to decrease a volume of the variable volume chamber by fluid flow from the variable volume chamber through the outlet opening (711, 721), which allows an interrelated movement of the movable valve body, characterized in that the controlled valve assembly comprises a stack of at least one controlled valve plate interacting with at least one surface presenting a curvature upon movement of the movable valve body with decreasing volume of the variable volume chamber, and the (stack of at least one) controlled valve plate upon deformation conforms to and rolls over the curvature to gradually decrease an effective surface area of the controlled valve plate in the controlled flow channel. - a controlled flow channel (302, 205, 105, 301; 910) arranged to provide a fluid connection between a first damper valve side and a second damper valve side of the damper valve; - a controlled valve assembly provided in the controlled flow channel to allow, in operation, influencing a controlled fluid flow (F15, F25) in the controlled flow channel in a controlled flow direction from the first damper valve side to the second damper valve side; - a movable valve body being movable with respect to a wall of the controlled flow channel and acting on the controlled valve assembly to allow changing a flow resistance for the controlled fluid flow by the controlled valve assembly and - a variable volume chamber (710, 720), the movable valve body interacting with the variable volume chamber such that movement of the movable valve body and a change in volume of the variable volume chamber are interrelated, wherein the variable volume chamber comprises an outlet opening (711, 721), in operation, downstream of the controlled valve assembly and does not comprise an opening upstream of the controlled valve assembly with respect to the controlled fluid flow (F15, F25) in the controlled flow channel, the outlet opening providing a flow resistance, and a fluid pressure upstream of the controlled valve assembly with respect to the controlled fluid flow acting on the movable valve body to induce a force on the movable valve member in a direction to increase a fluid pressure in the variable volume chamber and to decrease a volume of the variable volume chamber by fluid flow from the variable volume chamber through the outlet opening (711, 721), which allows an interrelated movement of the movable valve body, characterized in that the controlled valve assembly comprises a stack of at least one controlled valve plate interacting with at least one surface presenting a curvature upon movement of the movable valve body with decreasing volume of the variable volume chamber, and the (stack of at least one) controlled valve plate upon deformation conforms to and rolls over the curvature to gradually decrease an effective surface area of the controlled valve plate in the controlled flow channel.