A network to compensate for group delay having a pair of circuit paths with a variable delay network in one path and a fixed delay network in the other path. The input information is coupled to both circuit paths and the output of the two paths is combined in a differential amplifier to produce a vector addition of the signals from the separate paths. An isolation network is provided in the variable delay circuit path and a resonant circuit is provided to have an adjustable Q and adjustable frequency of resonance and is also located in the same path. Means are provided to adjust the relative amplitudes of the two signals so that the resulting output of the differential amplifier will have a substantially constant amplitude regardless of the output frequency or phase.