A shock absorber with simultaneous speed and frequency-dependent hydraulic load regulation, comprising a rod with an end ending in a pin of the rod in which there is fixed a piston separating a traction chamber from a compression chamber inside the shock absorber and comprising a through hole (31, 32) which allows communication between both chambers (8, 9), wherein the pin of the rod comprises a longitudinal channel and in wherein the shock absorber comprises: - a primary valve located in contact with the piston, - a guide bushing, fixed to the pin of the rod, surrounding part of the channel, allowing the passage of fluid through the channel between the two ends of the guide bushing and placed between the piston and a casing, allowing hydraulic communication between the channel and an amplifier chamber, - an elastic element surrounding the guide bushing, the elastic element being in contact with a floating piston, and - a frequency amplifier which in turn comprises: - the casing, fixed to the pin of the rod, configured by means of a base and a wall concentric with the pin of the rod, - the floating piston capable of sliding between the guide bushing and the wall of the casing, comprising a stepped base which, together with the guide bushing and the casing, configures the amplifier chamber, and - a pressure control valve, the shock absorber being characterized in that: - the floating piston has capacity to maintain leaktightness during sliding, - a secondary valve is located in contact with the primary valve, by means of a spacer, and with the elastic element, - the pressure control valve incorporates a permanent opening which allows the fluid to exit the amplifier chamber and is configured to open when the amplifier chamber reaches a specific level of pressure, allowing fluid to exit the amplifier chamber at a higher flow rate, such that the pressure of the amplifier chamber acts on the floating piston, which is displaced pressing on the elastic element which in turn acts on the secondary valve and regulates the opening of the primary valve until a specific level of pressure, controlled by the pressure control valve that is in the form of a pressure regulating valve. - a primary valve located in contact with the piston, - a guide bushing, fixed to the pin of the rod, surrounding part of the channel, allowing the passage of fluid through the channel between the two ends of the guide bushing and placed between the piston and a casing, allowing hydraulic communication between the channel and an amplifier chamber, - an elastic element surrounding the guide bushing, the elastic element being in contact with a floating piston, and - a frequency amplifier which in turn comprises: - the casing, fixed to the pin of the rod, configured by means of a base and a wall concentric with the pin of the rod, - the floating piston capable of sliding between the guide bushing and the wall of the casing, comprising a stepped base which, together with the guide bushing and the casing, configures the amplifier chamber, and - a pressure control valve, the shock absorber being characterized in that: - the floating piston has capacity to maintain leaktightness during sliding, - a secondary valve is located in contact with the primary valve, by means of a spacer, and with the elastic element, - the pressure control valve incorporates a permanent opening which allows the fluid to exit the amplifier chamber and is configured to open when the amplifier chamber reaches a specific level of pressure, allowing fluid to exit the amplifier chamber at a higher flow rate, such that the pressure of the amplifier chamber acts on the floating piston, which is displaced pressing on the elastic element which in turn acts on the secondary valve and regulates the opening of the primary valve until a specific level of pressure, controlled by the pressure control valve that is in the form of a pressure regulating valve. - the casing, fixed to the pin of the rod, configured by means of a base and a wall concentric with the pin of the rod, - the floating piston capable of sliding between the guide bushing and the wall of the casing, comprising a stepped base which, together with the guide bushing and the casing, configures the amplifier chamber, and - a pressure control valve, the shock absorber being characterized in that: - the floating piston has capacity to maintain leaktightness during sliding, - a secondary valve is located in contact with the primary valve, by means of a spacer, and with the elastic element, - the pressure control valve incorporates a permanent opening which allows the fluid to exit the amplifier chamber and is configured to open when the amplifier chamber reaches a specific level of pressure, allowing fluid to exit the amplifier chamber at a higher flow rate, - the floating piston has capacity to maintain leaktightness during sliding, - a secondary valve is located in contact with the primary valve, by means of a spacer, and with the elastic element, - the pressure control valve incorporates a permanent opening which allows the fluid to exit the amplifier chamber and is configured to open when the amplifier chamber reaches a specific level of pressure, allowing fluid to exit the amplifier chamber at a higher flow rate,