A method associated with a predefined electric circuit design, wherein each electric circuit manufactured in accordance with the electric circuit design defines a frequency response between an input signal (x(t)) and an output signal (y(t)) in a frequency range, the method comprising: redefining, based on measurements on a test lot of electric circuits manufactured in accordance with the electric circuit design, a design-specific model (Q(ω; T, V)) for the electric circuit design, the design-specific model describing a frequency response of the electric circuit design in dependence of at least one parameter (T, V) affecting operation of the electric circuit design; and for a unit in a main lot of electric circuits (120 m) manufactured in accordance with the electric circuit design, wherein the main lot includes electric circuits outside the test lot of electric circuits, and wherein the unit is outside the test lot of electric circuits: obtaining a unit-specific frequency response as a frequency response for the unit measured at a certain value of the at least one parameter; fitting the design-specific model at said certain value of the at least one parameter to said unit-specific frequency response, whereby a unit-specific model (Q m (ω; T, V) for the unit is obtained describing a frequency response for the unit in dependence of the at least one parameter; and storing, in association with the unit, data representing the unit-specific model such that the unit is operable in conjunction with a compensation stage (130 m), which is configured to retrieve said data representing the unit-specific model, determine a present value of the at least one parameter and, based on said present value and said unit-specific model, compensate a deviation between a frequency response of said unit and a reference frequency response, wherein the reference frequency response is independent of the at least one parameter. redefining, based on measurements on a test lot of electric circuits manufactured in accordance with the electric circuit design, a design-specific model (Q(ω; T, V)) for the electric circuit design, the design-specific model describing a frequency response of the electric circuit design in dependence of at least one parameter (T, V) affecting operation of the electric circuit design; and for a unit in a main lot of electric circuits (120 m) manufactured in accordance with the electric circuit design, wherein the main lot includes electric circuits outside the test lot of electric circuits, and wherein the unit is outside the test lot of electric circuits: obtaining a unit-specific frequency response as a frequency response for the unit measured at a certain value of the at least one parameter; fitting the design-specific model at said certain value of the at least one parameter to said unit-specific frequency response, whereby a unit-specific model (Q m (ω; T, V) for the unit is obtained describing a frequency response for the unit in dependence of the at least one parameter; and storing, in association with the unit, data representing the unit-specific model such that the unit is operable in conjunction with a compensation stage (130 m), which is configured to retrieve said data representing the unit-specific model, determine a present value of the at least one parameter and, based on said present value and said unit-specific model, compensate a deviation between a frequency response of said unit and a reference frequency response, wherein the reference frequency response is independent of the at least one parameter. obtaining a unit-specific frequency response as a frequency response for the unit measured at a certain value of the at least one parameter; fitting the design-specific model at said certain value of the at least one parameter to said unit-specific frequency response, whereby a unit-specific model (Q m (ω; T, V) for the unit is obtained describing a frequency response for the unit in dependence of the at least one parameter; and storing, in association with the unit, data representing the unit-specific model such that the unit is operable in conjunction with a compensation stage (130 m), which is configured to retrieve said data representing the unit-specific model, determine a present value of the at least one parameter and, based on said present value and said unit-specific model, compensate a deviation between a frequency response of said unit and a reference frequency response, wherein the reference frequency response is independent of the at least one parameter.